Adidas 1 - a smart shoe
Human identification is so hard, I'm certain some device will eventually make it secure and easy before the distance retina scanning or face recognition is adequately robust. Once the conversation starts, logging into your computer, paying for things, and unlocking your front door should all get a bit easier.
In addition, the more intelligent devices around you, the more information each device has about its surroundings. This is not only incentive to make everything from your sneakers to microwave "smart", but also avoids the general object recognition problem.
On a side note, why don't foods come with bar codes that a microwave or toaster oven can read and then properly cook the foods? Microwave popcorn is the first to come to mind. This wouldn't even involve something like an RFID, just ink.