Definition
An OTP (one-time password) is a code valid for a single authentication attempt or brief window. Delivery channels include SMS, authenticator apps (TOTP), and hardware tokens.
Team operational context
OTP forwarding in Slack is the anti-pattern. Shared MFA platforms deliver OTP to named people. SMS and TOTP cover most vendor flows.
Examples
- Six-digit SMS code for banking portal.
- Authenticator TOTP at cloud console login.
- Recovery OTP during account lockout.
