Jawbone UP4 puts American Express on your wrist

Jawbone is taking on mobile payments, with the fitness wearable firm partnering up with American Express to show Apple Pay and others how the cashless society should go. Based around a new flagship wristband, the Jawbone UP4, the payments system embeds NFC into the strap for frictionless transactions across any wireless-capable cash register where a regular American Express card could be used. I caught up with Jawbone and AMEX to find out why UP4 is special.