Cyber safety · lesson 4 of 24 · free

Never share an OTP or PIN — Cyber safety for kids

An OTP (one-time password) is a short code sent to a phone to log in or approve a payment. A PIN is the secret number for a phone, card or payment app. Whoever has them can act as you. Real banks, shops and games never ask you to read out an OTP — so anyone who asks, on a call, in a chat or “for a prize”, is trying to trick you. Don’t share it, and tell a parent.

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Stay safe

Nobody asks for an OTP — “not a bank, not a game, not a friend — an OTP stays with you”

  1. Never read out, type into a link or send an OTP or PIN to anyone — caller, friend or “customer care”.
  2. An OTP you did not ask for means someone may be trying to get in: ignore it and tell a parent.
  3. Keep PINs in your memory, cover the keypad and lock your phone screen.

Use it for: Calls from “the bank”, messages offering prizes or coins, and any request for a code.

Worked example: 🔢 Safe or unsafe: telling OTPs to callers? → an unsafe step

  1. Real banks and shops never ask for an OTP on a call.
  2. So it is an unsafe step.

Check: Try it: with a parent, look at a real OTP message and find the line that says not to share it ✓

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✏️ Practice

Work it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.

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🏁 Lesson 4 test

20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.

🏅 Sign in with Google to earn the 🔢 OTP Keeper badge when you pass — and a certificate when you finish all 8 lessons of Part 1 · Personal information and passwords. You can still take the test without signing in.

🖨️ Cyber Safety Worksheet: OTP and PIN Safety

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