OTP (One-Time Password)

byPaytm Editorial TeamLast Updated: August 12, 2025

Definition

The full form of OTP is One-Time Password. It is a temporary code sent to a user’s mobile or email for authentication during online transactions or logins.

Key Points

  • Valid for a short duration
  • Prevents unauthorized access
  • Used in banking, shopping, and secure logins
  • Delivered via SMS, email, or app notification

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