In the near future, you may not need to touch a keypad to select a tip or pay for large purchases. All it may take is a swipe, tap or other quick gesture.

NFCGest lets credit cards unlock terminals with gesture passcodes—adding security without extra hardware or PIN codes.

"I invented a device to scare them off by playing the sound of killer whales, but it's ended up only attracting them more." But failure with this device is in contrast to the success of his first and ...