Make your next purchase using these smart sunglassesVisa is testing a prototype that will let you use sunglasses to make purchases. A small NFC chip inside one of the arms will be linked to your Visa account. Instead of swiping your debit card, you would tap the payment terminal to make the transaction. Visa says the concept plays well into its tagline, “Everywhere you want to be.” Let’s just hope these shades don’t wind up where you don’t want them to be: lost. Source: * More: