Computer User Authentication

Authentication is the action of identifying your digital identity. Get educated on passwords, encryption keys, facial recognition and fingerprint scanners.


Remembering another password? How about replacing those codes with a simple selfie snap? Amazon and other companies are banking on pay-by-selfie as the future.

Biometrics provide a unique method of security that's virtually foolproof. Just scan a fingerprint or your retina and you're in. But what could happen if your personal information were stolen?

Are you a computer? If you've ever successfully filled in a CAPTCHA on the Web, you're probably not. So what is this test, and what does it do?

Digital signatures make sure the documents you send electronically are authentic. Learn about digital signatures and other authentication methods.

Your fingerprints are not only unique; they're also very hard to fake and even harder to misplace. What better ID to use in a security system? Learn how fingerprint scanners know it's you.

Security passcards are often used to gain entry into areas and buildings with restricted access. Find out what data is kept on an encoded security passcard and how they work.

The growth of the Internet has excited businesses and consumers alike with its promise of changing the way we live and work. But doing business online means there's a whole lot of information that we don't want other people to see. That's where encry

A smart card may look like a credit card, but just like people, it's what's inside that counts. Find out how smart cards protect sensitive data.