2FA methods supported by o2
o2 offers the following two-factor authentication options to help protect your account.
Security key (U2F)
o2 works with hardware security keys using the U2F/FIDO standard.
Proprietary app
o2 offers its own companion app for approving sign-ins.
o2 2FA — Frequently asked questions
Does o2 support an authenticator app?
No. o2 does not currently offer TOTP-based codes, but it does support Security key (U2F), Proprietary app.
Which two-factor authentication methods does o2 support?
o2 currently supports: Security key (U2F), Proprietary app.
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