The wristband would identify a customer's unique heartbeat to verify his or her identity when using a banking app on a smartphone.

The proposed hardware would encase a smartphone and enable it to scan and transmit iris, thumb and facial scans, as well as voice recordings.

The Navy is testing a new generation of military binoculars that can scan faces and identify suspects from 650 feet away.

The two departments are expanding their shared biometrics databases by adding iris scans.

Patients with dermatitis may find that their fingerprint scans are often unsuccessful, due to minute scarring and cracks that disturb the fine ridges in a subject's biometric fingerprint.

Use of facial recognition technology on popular social networking site Facebook, especially in photo tagging, has raised privacy concerns in Germany, where users must be allowed to give their explicit consent for such potentially privacy-encroaching applications.