The big difference between a restaurant's name and consumers' radio devices is that the restaurant's name was knowingly and deliberately placed up there by the

The big difference between a restaurant's name and consumers' radio devices is that the restaurant's name was knowingly and deliberately placed up there by the owner, whereas consumers most likely don't understand the privacy implications of their radio devices and often don't know how to protect themselves and may not even have the option to do so (my washing machine has some kind of smartphone link support, and I don't remember seeing a documented way to disable it). And while the restaurant next door is a company that openly offers services to the public, the machine in my bathroom is not open to the public. They're putting radios everywhere and anywhere now, but I don't think consumers generally expect and want anyone to be able to hear their devices, let alone scoop up the data and store it in a database with gps coordinates. You might also ask at what point does reading of unencrypted audio frequency vibrations originating from a private home become an invasion of privacy? Most homes aren't perfectly soundproof, and it's not too hard to make devices that can listen in. Is it ok just because you can? Same for radio imaging, etc.