Factors to consider
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A U2F token is a good option for Duo authentication for web applications
A U2F token will not work with the University's virtual private network (VPN)
The U2F standard is currently well supported by Google Chrome
U2F tokens are relatively inexpensive, with prices starting below $20$30
Most Yubikey YubiKey are compatible with Duo, see this page for details
It is easy for a user to add a U2F token to your Duo account in the self-service portal
...
Tokens must be added to a Duo account by an administrator
Employees who don't have a mobile phone or tablet or would prefer an alternate option, can request a token using the 2FA token request form
Report a lost or stolen token or transfer a token to another employee
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Second-factor criteria comparison
Second-factor option | Self-serve enrollment? | Phone number required? | Cellular network connection required? | Wi-Fi connection required? |
|---|---|---|---|---|
Duo Mobile app | Yes | No | No | No (only for enrollment) |
U2F token | Yes | No | No | Yes |
OTP token | No | No | No | No |
Combined U2F/OTP token | Yes (U2F) | No | No | No |
SMS | Yes | Yes | Yes | No |
Phone call | Yes | Yes | Yes (or landline) | No |
Assurance levels
Second-factor option | Assurance level |
|---|---|
Duo Mobile App | High |
U2F token | High |
OTP token | Moderate - high |
SMS | Low |
Phone call | Low |
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