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#2FA - Blog | FastStaq

Blog/#2FA

#2FA

Smartphone OTP code connected to a login form illustration.

Authentication

3 min read

How to Add Two-Factor Authentication (2FA) to Your SaaS

Add 2FA to your SaaS with TOTP - enroll an authenticator app, verify the first code, require it at login, and issue recovery codes - plus why TOTP beats SMS.

By Pasindu Gamage· 10/5/2026