Proverbial Wallets - I need thissssss

Proverbial Wallets from John Kestner on Vimeo.

I daresay that these wallets, developed by MIT, could change the world's spending habits.  They're designed to react according to your bank account and electronic purchases.  One model swells when your account balance is high, one gets more difficult to open as your spending increases.  See other articles at The Consumerist and  Ecouterre