Health anxiety is growing as more and more people use wearable technology that tracks sleep and other biometric data.

The Amazon One system enables purchases via hand waving. Christopher Mims of the WSJ discusses business prospects for biometric data.

Thales, a French firm, is launching a credit card that interacts with a user’s smartphone to provide audio cues and transaction confirmations.

As Facebook faces a lawsuit over its facial recognition technology, a look at the rules around our biometric data.