AUTHENTICATION

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

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What is a smart card?

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.

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  • How CAPTCHA Works
    How CAPTCHA Works

    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? See more »

  • How does a security passcard work?
    How does a security passcard work?

    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. See more »

  • How Encryption Works
    How Encryption Works

    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 See more »

  • How Fingerprint Scanners Work
    How Fingerprint Scanners Work

    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. See more »

  • How will biometrics affect our privacy?
    How will biometrics affect our privacy?

    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? See more »

  • What is a digital signature?
    What is a digital signature?

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

  • What is a smart card?
    What is a smart card?

    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. See more »

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