We've all been there. We try to pair our smartphone to an in-car infotainment system via Bluetooth, and we just can't get it to connect. We believe we're following the protocols, but for unfathomable ...

Imagine walking up to the Krispy Kreme at Heathrow International's Terminal 3. You order three hot glazed doughnuts and pay by waving your mobile phone at a non-descript payment point on the counter.

1. It’s cheap and easy. Near-field communication (NFC) is a short-range wireless transmitting technology that connects a smartphone with a receiver to transfer data. NFC’s big potential is in mobile ...