The new Checkout
stripe.com
stripe.com
Go to walmart, seven eleven, or any grocery store, do your shopping, the cashier activates the bill using NFC and you get it in your watch waiting for a confirmation.
The cashier gets your pic from the profile saved in the watch so she knows you're the real owner of the watch.
Extra security with a fingerprint, a 4 digit pin, or a secret swipe before sending the money from a credit card stored in the watch profile.
And that, my friends, is how smart watches will conquer our world.
I love that future and my bet is on it.