Is the dark, broad magnetic strip on the back of the credit cards that you–or your customers–swipe during purchases going the way of the eight-track tape player and dial-up modem? That appears to be ...

This hodge-podge of components is capable of spoofing the magnetic stripe on a credit card. [Sk3tch] built an electromagnet using a ferrous metal shim wrapped in enameled magnet wire. While he was ...