It's this simple: Say "Hey, Google — find my remote control ... The device you speak to doesn't even have to be in the same room. The key here is that they need to all be on the same network.
Will you need new tomato, fresh herb, finfish, shell egg suppliers (and more) if they can't do traceability? Will labels alone work for traceability? Check out this Q&A.
As I emerged back into the real world after visiting Key of Dreams, the realisation I ... (Speaking of whom, it was a pleasant surprise to find how welcoming my fellow group of researchers was.