* Leaving work but forgot your keys? The electromagnetic sensor in your pocket will vibrate your phone to let you know the moment you step out of the office.
* No more "three tap check" for keys, wallet, phone. Every time you leave the house your clothes will check that for you.
* Two-factor auth is a lot easier when you can authenticate by wearing special underwear
* Feeling cold? Your clothes can probably detect that and adjust the thermostat in your car or home automatically (including heated seats!)
Lots of cool ideas, but these ideas have been floating around for a while now. Every piece of wearable clothing I've seen that had integrated electronics has been both bulky and gaudy. Maybe a concentrated focus like this will bring it to the next level.