Category Archives: technology

The future of planetary exploration robots

An article in Popular Science about explorer robots:

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This is a nice idea for an explorer. I’m a bit surprised it is in Popular Science, unless it’s an old edition, since the idea first appeared ages ago, but then again, why not, it’s still a good idea. Anyway…

The most impressive idea I ever saw for an explorer robot was back in the 90s from Joe Michael of Robodyne Cybernetics, which used fractal cubes that could slide along each face, thereby rearranging into any shape. Once the big cubes were in place, smaller ones would rearrange to give fine structure. That was way before everyone and his dog new all about nanotech, his thinking was well ahead of his time. A huge array of fractal cubes could become any shape – a long snake to cross high or narrow obstacles, a thin plate to capture wind like a sail, a ball to roll around, or a dense structure to minimize volume or wind resistance.

NASA tends to opt for ridiculously expensive and complex landers with wheels and lots of gadgetry that can drive to where they want to be.

I do wonder though whether people are avoiding the simple ideas just because they’re simple. In nature, some tiny spiders get around just by spinning a length of thread and letting the wind carry them. Bubbles can float on the wind too, as can balloons. Where there’s an atmosphere, there is likely to be wind, and if simple exploration is the task, why not just let the winds carry you around? If not a thread, use a balloon that can be inflated and deflated, or a sail. Why not use a large cloud of tiny explorers using wind by diverse techniques instead of a large single robotic vehicle? Even if there is no atmosphere, surely a large cloud of tiny and diverse explorers is more capable and robust than a single one? The clue to solving the IT bits are that a physical cloud can also be an IT cloud. Why not let them use different shapes for different circumstances, so that they can float up, be blown around, and when they want to go somewhere interesting, then glide to where they want to be? Dropping from a high altitude is an easy way of gathering the kinetic energy for ground penetration too, you don’t have to carry sophisticated drills. Local atmosphere can be used as the gas source and ballast (via freezing atmospheric gases or taking some dust with you) for balloons and wind or solar can be the power supply. Obviously, people in all space agencies must have thought of these ideas themselves. I just don’t understand why they have thrown them away in favor of far more heavier and more expensive variants.

I’m not an expert on space. Maybe there are excellent reasons that each and every one of these can’t work. But I also have enough experience of engineering to know that one of the most likely reasons is that they just aren’t exciting enough and the complex, expensive, unreliable and less capable solutions simply look far more cool and trendy. Maybe it is simply that ego is more important than mission success.

The future of bacteria

Bacteria have already taken the prize for the first synthetic organism. Craig Venter’s team claimed the first synthetic bacterium in 2010.

Bacteria are being genetically modified for a range of roles, such as converting materials for easier extraction (e.g. coal to gas, or concentrating elements in landfill sites to make extraction easier), making new food sources (alongside algae), carbon fixation, pollutant detection and other sensory roles, decorative, clothing or cosmetic roles based on color changing, special surface treatments, biodegradable construction or packing materials, self-organizing printing… There are many others, even ignoring all the military ones.

I have written many times on smart yogurt now and it has to be the highlight of the bacterial future, one of the greatest hopes as well as potential danger to human survival. Here is an extract from a previous blog:

Progress is continuing to harness bacteria to make components of electronic circuits (after which the bacteria are dissolved to leave the electronics). Bacteria can also have genes added to emit light or electrical signals. They could later be enhanced so that as well as being able to fabricate electronic components, they could power them too. We might add various other features too, but eventually, we’re likely to end up with bacteria that contain electronics and can connect to other bacteria nearby that contain other electronics to make sophisticated circuits. We could obviously harness self-assembly and self-organisation, which are also progressing nicely. The result is that we will get smart bacteria, collectively making sophisticated, intelligent, conscious entities of a wide variety, with lots of sensory capability distributed over a wide range. Bacteria Sapiens.

I often talk about smart yogurt using such an approach as a key future computing solution. If it were to stay in a yogurt pot, it would be easy to control. But it won’t. A collective bacterial intelligence such as this could gain a global presence, and could exist in land, sea and air, maybe even in space. Allowing lots of different biological properties could allow colonization of every niche. In fact, the first few generations of bacteria sapiens might be smart enough to design their own offspring. They could probably buy or gain access to equipment to fabricate them and release them to multiply. It might be impossible for humans to stop this once it gets to a certain point. Accidents happen, as do rogue regimes, terrorism and general mad-scientist type mischief.

Transhumanists seem to think their goal is the default path for humanity, that transhumanism is inevitable. Well, it can’t easily happen without going first through transbacteria research stages, and that implies that we might well have to ask transbacteria for their consent before we can develop true transhumans.

Self-organizing printing is a likely future enhancement for 3D printing. If a 3D printer can print bacteria (onto the surface of another material being laid down, or as an ingredient in a suspension as the extrusion material itself, or even a bacterial paste, and the bacteria can then generate or modify other materials, or use self-organisation principles to form special structures or patterns, then the range of objects that can be printed will extend. In some cases, the bacteria may be involved in the construction and then die or be dissolved away.

Estimating IoT value? Count ALL the beans!

In this morning’s news:

£1.6M investment by UK Technology Strategy Board in Internet-of-Things HyperCat standard, which the article says will add £100Bn to the UK economy by 2020.

Garnter says that IoT has reached the hype peak of their adoption curve and I agree. Connecting machines together, and especially adding networked sensors will certainly increase technology capability across many areas of our lives, but the appeal is often overstated and the dangers often overlooked. Value should not be measured in purely financial terms either. If you value health, wealth and happiness, don’t just measure the wealth. We value other things too of course. It is too tempting just to count the most conspicuous beans. For IoT, which really just adds a layer of extra functionality onto an already technology-rich environment, that is rather like estimating the value of a chili con carne by counting the kidney beans in it.

The headline negatives of privacy and security have often been addressed so I don’t need to explore them much more here, but let’s look at a couple of typical examples from the news article. Allowing remotely controlled washing machines will obviously impact on your personal choice on laundry scheduling. The many similar shifts of control of your life to other agencies will all add up. Another one: ‘motorists could benefit from cheaper insurance if their vehicles were constantly transmitting positioning data’. Really? Insurance companies won’t want to earn less, so motorists on average will give them at least as much profit as before. What will happen is that insurance companies will enforce driving styles and car maintenance regimes that reduce your likelihood of a claim, or use that data to avoid paying out in some cases. If you have to rigidly obey lots of rules all of the time then driving will become far less enjoyable. Having to remember to check the tyre pressures and oil level every two weeks on pain of having your insurance voided is not one of the beans listed in the article, but is entirely analogous the typical home insurance rule that all your windows must have locks and they must all be locked and the keys hidden out of sight before they will pay up on a burglary.

Overall, IoT will add functionality, but it certainly will not always be used to improve our lives. Look at the way the web developed. Think about the cookies and the pop-ups and the tracking and the incessant virus protection updates needed because of the extra functions built into browsers. You didn’t want those, they were added to increase capability and revenue for the paying site owners, not for the non-paying browsers. IoT will be the same. Some things will make minor aspects of your life easier, but the price of that will that you will be far more controlled, you will have far less freedom, less privacy, less security. Most of the data collected for business use or to enhance your life will also be available to government and police. We see every day the nonsense of the statement that if you have done nothing wrong, then you have nothing to fear. If you buy all that home kit with energy monitoring etc, how long before the data is hacked and you get put on militant environmentalist blacklists because you leave devices on standby? For every area where IoT will save you time or money or improve your control, there will be many others where it does the opposite, forcing you to do more security checks, spend more money on car and home and IoT maintenance, spend more time following administrative procedures and even follow health regimes enforced by government or insurance companies. IoT promises milk and honey, but will deliver it only as part of a much bigger and unwelcome lifestyle change. Sure you can have a little more control, but only if you relinquish much more control elsewhere.

As IoT starts rolling out, these and many more issues will hit the press, and people will start to realise the downside. That will reduce the attractiveness of owning or installing such stuff, or subscribing to services that use it. There will be a very significant drop in the economic value from the hype. Yes, we could do it all and get the headline economic benefit, but the cost of greatly reduced quality of life is too high, so we won’t.

Counting the kidney beans in your chili is fine, but it won’t tell you how hot it is, and when you start eating it you may decide the beans just aren’t worth the pain.

I still agree that IoT can be a good thing, but the evidence of web implementation suggests we’re more likely to go through decades of abuse and grief before we get the promised benefits. Being honest at the outset about the true costs and lifestyle trade-offs will help people decide, and maybe we can get to the good times faster if that process leads to better controls and better implementation.

Ultra-simple computing: Part 4

Gel processing

One problem with making computers with a lot of cores is the wiring. Another is the distribution of tasks among the cores. Both of these can be solved with relatively simple architecture. Processing chips usually have a lot of connectors, letting them get data in parallel. But a beam of light can contain rays of millions of wavelengths, far more parallelism than is possible with wiring. If chips communicated using light with high density wavelength division multiplexing, it will solve some wiring issues. Taking another simple step, processors that are freed from wiring don’t have to be on a circuit board, but could be suspended in some sort of gel. Then they could use free space interconnection to connect to many nearby chips. Line of sight availability will be much easier than on a circuit board. Gel can also be used to cool chips.

Simpler chips with very few wired connections also means less internal wiring too. This reduces size still further and permits higher density of suspension without compromising line of sight.

Ripple scheduler

Process scheduling can also be done more simply with many processors. Complex software algorithms are not needed. In an array of many processors, some would be idle while some are already engaged on tasks. When a job needs processed, a task request (this could be as simple as a short pulse of a certain frequency) would be broadcast and would propagate through the array. On encountering an idle processor, the idle processor would respond with an accept response (again this could be a single pulse of another frequency. This would also propagate out as a wave through the array. These two waves may arrive at a given processor in quick succession.

Other processors could stand down automatically once one has accepted the job (i.e. when they detect the acceptance wave). That would be appropriate when all processors are equally able. Alternatively, if processors have different capabilities, the requesting agent would pick a suitable one from the returning acceptances, send a point to point message to it, and send out a cancel broadcast wave to stand others down. It would exchange details about the task with this processor on a point to point link, avoiding swamping the system with unnecessary broadcast messages.  An idle processor in the array would thus see a request wave, followed by a number of accept waves. It may then receive a personalized point to point message with task information, or if it hasn’t been chosen, it would just see the cancel wave of . Busy processors would ignore all communications except those directed specifically to them.

I’m not saying the ripple scheduling is necessarily the best approach, just an example of a very simple system for process scheduling that doesn’t need sophisticated algorithms and code.

Activator Pastes

It is obvious that this kind of simple protocol can be used with a gel processing medium populated with a suitable mixture of different kinds of processors, sensors, storage, transmission and power devices to provide a fully scalable self-organizing array that can perform a high task load with very little administrative overhead. To make your smart gel, you might just choose the volume of weight ratios of components you want and stir them into a gel rather like mixing a cocktail. A paste made up in this way could be used to add sensing, processing and storage to any surface just by painting some of the paste onto it.

A highly sophisticated distributed cloud sensor network for example could be made just by painting dabs of paste onto lamp posts. Solar power or energy harvesting devices in the paste would power the sensors to make occasional readings, pre-process them, and send them off to the net. This approach would work well for environmental or structural monitoring, surveillance, even for everyday functions like adding parking meters to lines marking the spaces on the road where they interact with ID devices in the car or an app on the driver’s smartphone.

Special inks could contain a suspension of such particles and add a highly secure electronic signature onto one signed by pen and ink.

The tacky putty stuff that we use to stick paper to walls could use activator paste as the electronic storage and processing medium to let you manage  content an e-paper calendar or notice on a wall.

I can think of lots of ways of using smart pastes in health monitoring, packaging, smart makeup and so on. The basic principle stays the same though. It would be very cheap and yet very powerful, with many potential uses. Self-organising, and needs no set up beyond giving it a job to do, which could come from any of your devices. You’d probably buy it by the litre, keep some in the jar as your computer, and paste the rest of it all over the place to make your skin, your clothes, your work-spaces and your world smart. Works for me.


Ultra-simple computing: Part 2

Chip technology

My everyday PC uses an Intel Core-I7 3770 processor running at 3.4GHz. It has 4 cores running 8 threads on 1.4 billion 22nm transistors on just 160mm^2 of chip. It has an NVIDIA GeForce GTX660 graphics card, and has 16GB of main memory. It is OK most of the time, but although the processor and memory utilisation rarely gets above 30%, its response is often far from instant.

Let me compare it briefly with my (subjectively at time of ownership) best ever computer, my Macintosh 2Fx, RIP, which I got in 1991, the computer on which I first documented both the active contact lens and text messaging and on which I suppose I also started this project. The Mac 2Fx ran a 68030 processor at 40MHz, with 273,000 transistors and 4MB of RAM, and an 80MB hard drive. Every computer I’ve used since then has given me extra function at the expense of lower performance, wasted time and frustration.

Although its OS is stored on a 128GB solid state disk, my current PC takes several seconds longer to boot than my Macintosh Fx did – it went from cold to fully operational in 14 seconds – yes, I timed it. On my PC today, clicking a browser icon to first page usually takes a few seconds. Clicking on a word document back then took a couple of seconds to open. It still does now. Both computers gave real time response to typing and both featured occasional unexplained delays. I didn’t have any need for a firewall or virus checkers back then, but now I run tedious maintenance routines a few times every week. (The only virus I had before 2000 was nVir, which came on the Mac2 system disks). I still don’t get many viruses, but the significant time I spend avoiding them has to be counted too.

Going back further still, to my first ever computer in 1981, it was an Apple 2, and only had 9000 transistors running at 2.5MHz, with a piddling 32kB of memory. The OS was tiny. Nevertheless, on it I wrote my own spreadsheet, graphics programs, lens design programs, and an assortment of missile, aerodynamic and electromagnetic simulations. Using the same transistors as the I7, you could make 1000 of these in a single square millimetre!

Of course some things are better now. My PC has amazing graphics and image processing capabilities, though I rarely make full use of them. My PC allows me to browse the net (and see video ads). If I don’t mind telling Google who I am I can also watch videos on YouTube, or I could tell the BBC or some other video provider who I am and watch theirs. I could theoretically play quite sophisticated computer games, but it is my work machine, so I don’t. I do use it as a music player or to show photos. But mostly, I use it to write, just like my Apple 2 and my Mac Fx. Subjectively, it is about the same speed for those tasks. Graphics and video are the main things that differ.

I’m not suggesting going back to an Apple 2 or even an Fx. However, using I7 chip tech, a 9000 transistor processor running 1360 times faster and taking up 1/1000th of a square millimetre would still let me write documents and simulations, but would be blazingly fast compared to my old Apple 2. I could fit another 150,000 of them on the same chip space as the I7. Or I could have 5128 Mac Fxs running at 85 times normal speed. Or you could have something like a Mac FX running 85 times faster than the original for a tiny fraction of the price. There are certainly a few promising trees in the forest that nobody seems to have barked up. As an interesting aside, that 22nm tech Apple 2 chip would only be ten times bigger than a skin cell, probably less now, since my PC is already several months old

At the very least, that really begs the question what all this extra processing is needed for and why there is still ever any noticeable delay doing anything in spite of it. Each of those earlier machines was perfectly adequate for everyday tasks such as typing or spreadsheeting. All the extra speed has an impact only on some things and most is being wasted by poor code. Some of the delays we had 20 and 30 years ago still affect us just as badly today.

The main point though is that if you can make thousands of processors on a standard sized chip, you don’t have to run multitasking. Each task could have a processor all to itself.

The operating system currently runs programs to check all the processes that need attention, determine their priorities, schedule processing for them, and copy their data in and out of memory. That is not needed if each process can have its own dedicated processor and memory all the time. There are lots of ways of using basic physics to allocate processes to processors, relying on basic statistics to ensure that collisions rarely occur. No code is needed at all.

An ultra-simple computer could therefore have a large pool of powerful, free processors, each with their own memory, allocated on demand using simple physical processes. (I will describe a few options for the basic physics processes later). With no competition for memory or processing, a lot of delays would be eliminated too.

More future fashion fun

A nice light hearted shorty again. It started as one on smart makeup, but I deleted that and will do it soon. This one is easier and in line with today’s news.

I am the best dressed and most fashion conscious futurologist in my office. Mind you, the population is 1. I liked an article in the papers this morning about Amazon starting to offer 3D printed bobble-heads that look like you.


I am especially pleased since I suggested it over 2 years ago  in a paper I wrote on 3D printing.

In the news article, you see the chappy with a bobble-head of him wearing the same shirt. It is obvious that since Amazon sells shirts too, that it won’t be long at all before they send you cute little avatars of you wearing the outfits you buy from them. It starts with bobble-heads but all the doll manufacturers will bring out versions based on their dolls, as well as character merchandise from films, games, TV shows. Kids will populate doll houses with minis of them and their friends.

You could even give one of a friend to them for a birthday present instead of a gift voucher, so that they can see the outfit you are offering them before they decide whether they want that or something different. Over time, you’d have a collection of minis of you and your friends in various outfits.

3D cameras are coming to phones too, so you’ll be able to immortalize embarrassing office party antics in 3D office ornaments. When you can’t afford to buy an outfit or accessory sported by your favorite celeb, you could get a miniature wearing it. Clothing manufacturers may well appreciate the extra revenue from selling miniatures of their best kit.

Sports manufacturers will make replicas of you wearing their kit, doing sporting activities. Car manufacturers will have ones of you driving the car they want you to buy, or you could buy a fleet of miniatures. Holiday companies could put you in a resort hotspot. Or in a bedroom ….with your chosen celeb.

OK, enough.



Future materials: Variable grip

variable grip


Another simple idea for the future. Variable grip under electronic control.

Shape changing materials are springing up regularly now. There are shape memory metal alloys, proteins, polymer gel muscle fibers and even string (changes shape when it gets wet or dries again). It occurred to me that if you make a triangle out of carbon fibre or indeed anything hard, with a polymer gel base, and pull the base together, either the base moves down or the tip will move up. If tiny components this shape are embedded throughout a 3D structure such as a tire (tyre is the English spelling, the rest of this text just uses tire because most of the blog readers are Americans), then tiny spikes could be made to poke through the surface by contracting the polymer gel that forms the base. All you have to do is apply an electric field across it, and that makes the tire surface just another part of the car electronics along with the engine management system and suspension.

Tires that can vary their grip and wear according to road surface conditions might be attractive, especially in car racing, but also on the street. Emergency braking improvement would save lives, as would reduce skidding in rain or ice, and allowing the components to retract when not in use would greatly reduce their rate of wear. In racing, grip could be optimized for cornering and braking and wear could be optimized for the straights.


Although I haven’t bothered yet to draw pretty pictures to illustrate, clothes could use variable grip too. Shoes and gloves would both benefit. Since both can have easy contact with skin (shoes can use socks as a relay), the active components could pick up electrical signals associated with muscle control or even thinking. Even stress is detectable via skin resistance measurement. Having gloves or shoes that change grip just by you thinking it would be like a cat with claws that push out when it wants to climb a fence or attack something. You could even be a micro-scale version of Wolverine. Climbers might want to vary the grip for different kinds of rock, extruding different spikes for different conditions.

Other clothes could use different materials for the components and still use the same basic techniques to push them out, creating a wide variety of electronically controllable fabric textures. Anything from smooth and shiny through to soft and fluffy could be made with a single adaptable fabric garment. Shoes, hosiery, underwear and outerwear can all benefit. Fun!

Switching people off

A very interesting development has been reported in the discovery of how consciousness works, where neuroscientists stimulating a particular brain region were able to switch a woman’s state of awareness on and off. They said: “We describe a region in the human brain where electrical stimulation reproducibly disrupted consciousness…”

The region of the brain concerned was the claustrum, and apparently nobody had tried stimulating it before, although Francis Crick and Christof Koch had suggested the region would likely be important in achieving consciousness. Apparently, the woman involved in this discovery was also missing some of her hippocampus, and that may be a key factor, but they don’t know for sure yet.

Mohamed Koubeissi and his the team at the George Washington university in Washington DC were investigating her epilepsy and stimulated her claustrum area with high frequency electrical impulses. When they did so, the woman lost consciousness, no longer responding to any audio or visual stimuli, just staring blankly into space. They verified that she was not having any epileptic activity signs at the time, and repeated the experiment with similar results over two days.

The team urges caution and recommends not jumping to too many conclusions. They did observe the obvious potential advantages as an anesthesia substitute if it can be made generally usable.

As a futurologist, it is my job to look as far down the road as I can see, and imagine as much as I can. Then I filter out all the stuff that is nonsensical, or doesn’t have a decent potential social or business case or as in this case, where research teams suggest that it is too early to draw conclusions. I make exceptions where it seems that researchers are being over-cautious or covering their asses or being PC or unimaginative, but I have no evidence of that in this case. However, the other good case for making exceptions is where it is good fun to jump to conclusions. Anyway, it is Saturday, I’m off work, so in the great words of Dr Emmett Brown in ‘Back to the future':  “Well, I figured, what the hell.”

OK, IF it works for everyone without removing parts of the brain, what will we do with it and how?

First, it is reasonable to assume that we can produce electrical stimulation at specific points in the brain by using external kit. Trans-cranial magnetic stimulation might work, or perhaps implants may be possible using injection of tiny particles that migrate to the right place rather than needing significant surgery. Failing those, a tiny implant or two via a fine needle into the right place ought to do the trick. Powering via induction should work. So we will be able to produce the stimulation, once the sucker victim subject has the device implanted.

I guess that could happen voluntarily, or via a court ordered protective device, as a condition of employment or immigration, or conditional release from prison, or a supervision order, or as a violent act or in war.

Imagine if government demands a legal right to access it, for security purposes and to ensure your comfort and safety, of course.

If you think 1984 has already gone too far, imagine a government or police officer that can switch you off if you are saying or thinking the wrong thing. Automated censorship devices could ensure that nobody discusses prohibited topics.

Imagine if people on the street were routinely switched off as a VIP passes to avoid any trouble for them.

Imagine a future carbon-reduction law where people are immobilized for an hour or two each day during certain periods. There might be a quota for how long you are allowed to be conscious each week to limit your environmental footprint.

In war, captives could have devices implanted to make them easy to control, simply turned off for packing and transport to a prison camp. A perimeter fence could be replaced by a line in the sand. If a prisoner tries to cross it, they are rendered unconscious automatically and put back where they belong.

Imagine a higher class of mugger that doesn’t like violence much and prefers to switch victims off before stealing their valuables.

Imagine being able to switch off for a few hours to pass the time on a long haul flight. Airlines could give discounts to passengers willing to be disabled and therefore less demanding of attention.

Imagine  a couple or a group of friends, or a fetish club, where people can turn each other off at will. Once off, other people can do anything they please with them – use them as dolls, as living statues or as mannequins, posing them, dressing them up. This is not an adult blog so just use your imagination – it’s pretty obvious what people will do and what sorts of clubs will emerge if an off-switch is feasible, making people into temporary toys.

Imagine if you got an illegal hacking app and could freeze the other people in your vicinity. What would you do?

Imagine if your off-switch is networked and someone else has a remote control or hacks into it.

Imagine if an AI manages to get control of such a system.

Having an off-switch installed could open a new world of fun, but it could also open up a whole new world for control by the authorities, crime control, censorship or abuse by terrorists and thieves and even pranksters.



Smart fuse

This maybe exists now but I couldn’t find it right away on Google. It is an idea I had a very long time ago, but with all the stuff coming from Apple and Google now, this would make an easier and cheaper way to make most appliances smart without adding huge cost or locking owners in to a corporate ecosystem.

Most mains powered appliances come with plugs that have fuses in them. Here is a UK plug, pic courtesy of BBC.


If the fuse in the plug is replaced by a smart fuse that has an internet address, then this presents a means to switch things on and off automatically. A signal could be sent over the mains from a plug-in controller somewhere in the house, or via radio, wireless LAN, even voice command. The appliance therefore becomes capable of being turned on and off remotely at minimal cost.

At slightly higher expense, with today’s miniaturisation levels, smart fuses would be a cheap way of adding other functions. They could contain ROM loaded with software for the appliance, giving security via an easy upgrade that can’t be tampered with. They could also contain timers, sensors, usage meters, and talk to other devices, such as a phone or PC, or enable appliances for cheaper electricity by letting power companies turn them on and off remotely.

There really is no need to add heavily to appliance cost to make it smart. A smart fuse could cost pennies and still do the job.

Future fashion fun – digital eyebrows

I woke in the middle of the night with another idea not worth patenting, and I’m too lazy to do it, so any entrepreneur who’s too lazy to think of ideas can have it, unless someone already has.

If you make an app that puts a picture of an eyebrow on a phone screen and moves it according to some input (e.g voice, touch, or networked control by your friends or venue), you could use phones to do fun eyebrowy type things at parties, concerts, night clubs etc. You need two phones or a midi-sized tablet unless your eyes are very close together. The phones have accelerometers that know which way up they are and can therefore balance the eyebrows in the right positions. So you can make lots of funny expression on people’s faces using your phones.

Not a Facebook-level idea you’ll agree, but I can imagine some people doing it at parties, especially if they are all controlled by a single app, so that everyone’s eyebrows make the same expression.

You could do it for the whole eye/eyebrow, but then of course you can’t see the your friends laughing, since you’re holding a screen in front of your eyes.

You could have actual physical eyebrows that attach to the tops of your glasses, also controlled remotely.

You could use e-ink/e-paper and make small patches to stick on the skin that do the same function, or a headband. Since they don’t need much power, you won’t need big batteries.

You could do the same for your nose or mouth, so that you have a digitally modifiable face controlled by your friends.

I’m already bored.