+8.1.2.5 Multi-Factor OTP
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8.1.2.5 Multi-Factor OTP
Typical Usage Users access the OTP generated by the multi-factor OTP authenticator through a second authentication factor. The OTP is typically displayed on the device, and the user manually enters it during the session being authenticated. The second authentication factor may be achieved through some kind of integral entry pad to enter a password or an integral biometric (e.g., fingerprint) reader. Usability considerations for the additional factor also apply (see Sec. 8.1.2.1 for passwords and Sec. 8.1.4 for biometrics used in multi-factor authenticators). Usability considerations for typical usage include:
User experience during manual entry of the authenticator output
For time-based OTPs, provide a grace period in addition to the time during which the OTP is displayed. Users need adequate time to enter the authenticator output, including looking back and forth between the multi-factor OTP authenticator and the entry screen.
Consider form-factor constraints if users must unlock the multi-factor OTP authenticator via an integral entry pad or enter the authenticator output on mobile devices. Typing on small devices is significantly more error-prone and time-consuming than typing on a traditional keyboard. Providing larger touch areas improves usability for unlocking the multi-factor OTP authenticator or entering the authenticator output on mobile devices.
1. Pregled
1.1 Sklici
1.2 Ugotovljene zahteve
1.3 Povezani predpisi
2. Ugotovljene zahteve
3. Povezani predpisi
- NIST -
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