Proverbial wallet to make you financial conscious

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If you looking way to tighten your wallet, or to have better control of your financial status, why not use this new gadget, called proverbial wallet. It is simply a wallet, but add some technology to notify you about your financial health when you purchase with a credit card, or with cash. The prototype of this proverbial wallet basically communicate with your cellphone through bluetooth; Using its data connection to get user's bank account information. So, it you overuse your money, the wallet will buzz. You can check it out at http://eco.media.mit.edu/proverbialwallets/