Phones that are compatible with NFC are incredibly useful if you buy some of these chips and program them yourselves. You can set certain profiles for your phone for when you go to bed or wake up. A quick swipe of the NFC sticker on your nightstand can change your phone to the appropriate pre-programmed settings. You can use this in plenty of other capacities around The House or in the car. I've used NFC chips and stickers in limited circumstances with great success. Anyone else?
