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.