NFC device over a sensor? Not so much. Enter the Proverbial Wallets from the Information Ecology group at the MIT Media Lab, three separate devices that use three haptic techniques to curtail your spending. First is the Bumblebee, which buzzes and vibrates whenever money comes into or goes out from your account. Next is Mother Bear, which becomes harder to open as you get closer to your spending goal. Finally is Peacock, which swells proudly as your bank balance does the same. Sadly none of these are actually available yet, but we have a feeling if they were they might put a bit of a hurting on our very real and very strict budgets.