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  1. One-time password - Wikipedia

    A one-time password (OTP), also known as a one-time PIN, one-time passcode, one-time authorization code (OTAC) or dynamic password, is a password that is valid for only one login …

  2. Urban Dictionary: otp

    Jan 4, 2012 · otp One True Pairing. Meaning the your favorite combination of characters in a fandom. Harry and Hermione are /so/ OTP.

  3. One-time passwords (OTP) - Security | MDN

    Nov 23, 2025 · A one-time password (OTP), also known as one-time PIN, or one-time authorization code (OTAC) is a generated code that is specific to a single login attempt. The …

  4. OTPs Explained: OTP Meaning, Uses & Benefits - Descope

    Dec 10, 2024 · An OTP—also known as a one-time PIN or one-time authorization code (OTAC)—is a unique, dynamically generated code that can only be used once to verify the …

  5. OTP, TOTP, HOTP: What’s the Difference? | OneLogin

    An OTP is like a password but it can only be used once, thus it stands for one-time password. It is often used in combination with a regular password as an additional authentication mechanism …

  6. What is OTP Authentication and How Does it Work?

    OTP authentication (One-Time Password authentication) is a security mechanism that generates a unique, temporary code for every login or transaction. Unlike static passwords, an OTP is …

  7. One Time Password: How OTP Authentication Works | Okta

    Sep 28, 2024 · What is a One-Time Password (OTP)? A one-time password is a secure authentication code that works just once, and for a short duration, to verify a user’s Identity …

  8. What Is a One-Time Password (OTP)? And How It Works

    Nov 26, 2025 · Time-Based OTP (TOTP) The most prevalent form of OTP used in modern authenticator apps is the Time-Based One-Time Password, or TOTP. In this system, the …

  9. One-Time Passwords (OTPs) explained: What they are, how they …

    Nov 19, 2025 · Everything you need to know about OTPs, from HOTP and TOTP internals to real-world pros and cons, plus how WorkOS can help you implement them cleanly. One-time …

  10. OTP Meaning Explained: The Definitive Guide to One-Time …

    Jan 30, 2025 · Understanding OTP: Definition and Core Principles OTP stands for One-Time Password, a unique, short-lived code used to authenticate users during a single transaction or …