Modern smart keys allow you to keep the key fob in your pocket or purse while you simply grab the handle and tug the door open. [Phil] decided he would rather ditch the fob altogether and instead ...

[youtube=http://www.youtube.com/watch?v=qmugZcobahA&w=640&h=360] San Francisco-based startup Coin may not have launched yet, but it has created a hardware platform ...