This Tiny Metal Coil Has The Power To Change Mobile Payments And Become Bigger Than Apple Pay

The metal coil shown here doesn't look like much. Just some looped copper. But if you run an alternating current through it, the coil will produce a magnetic field. And if you create the right kind of magnetic field, the coil can communicate with a standard credit card reader. That's how LoopPay works. LoopPay is a mobile payments startup that lets you load your credit cards into an accessory, like a smartphone case or dongle, and make payments just by tapping it against a standard magnetic cred...