![]() ![]() Generates OTPs that are only valid for a short duration (generally no more But to narrow that security risk, the system The project's official tagline is " Two-step verification ",Ī subtle acknowledgment of its distinction from a strict definition of an Android emulator) would circumvent the "things you have" ![]() Unlike the Android app, however, those devicesĪre meant to make it difficult to extract the key without destroying them.Īccessing the key from a phone, then running the app elsewhere To the computer to authenticate a user, though some one-time password (OTP) Traditionally, hardware authentication tokens must be physically connected Is some question whether or not they truly "count" as a second factor. Because these applications are software and generateĪuthentication strings for the user to enter at login time, however, there On the smartphone side, the Google Authenticator project providesĪpplication software for Android devices, Apple iPhones, and Blackberry The search giant subsequently rolled out support for the scheme for its web applications, but its standards-based functionality and Pluggable Authentication Module (PAM) support have brought it success in a variety of third-party systems as well. Late in 2010, however, Google unveiled an open source project called Google Authenticator that allowed the common smartphone to serve as the "thing you have" factor. Issue, to be sure, but the complexity of public-key infrastructure (PKI) Neither have taken off with the general public. Security dongles and biometric fingerprint scanners, for example. Passphrases both fall under the "things you know" umbrella, and while thereĪre commercially viable options for the latter two categories. You know," "things you have," and "things you are." Passwords and ![]() Scheme involves requiring items from two or more of the categories "things The security-conscious will tell you that a multi-factor authentication This article was contributed by Nathan Willis ![]()
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