Is the phone-as-a-credit-card a good idea?
When somebody steals your credit card:
Hell, where's my credit card? They can drain my account! I'll phone immediately to my bank and block it!
When somebody steals your phone-as-a-credit-card:
Hell, where's my phone? They can drain my account! I'll phone... oh, FUCK!
PS I'm not demonizing the new feature from Android. Somebody will find it useful. I won't.