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Case 10 of 16

Crypto in Daily Life

📋 What it is

Cryptography quietly protects everyday things — messages, passwords, online payments, and website security.

🗣️ Coach says

You use cryptography constantly without noticing. The little padlock in your browser means the page is encrypted. Your messages, passwords, and online payments are all scrambled so only the right person can read them.

🧠 Memory hook

The browser padlock = encryption at work, protecting your data in transit.

😂 Giggle

What did the plaintext say to the ciphertext?
"I don't even recognize you anymore!"

😲 Whoa!

Every time you see “https” and a padlock, your data is being encrypted and decrypted dozens of times a second — cryptography working silently in the background.

✅ Quick check: What does the padlock icon in your web browser mean?

Say your answer out loud first — then reveal.

🧪 Try it! (2 minutes)

Look for the padlock in your browser’s address bar. That’s cryptography protecting you right now.

⭐ Do the round to earn your star →
🤸 Brain break: Padlock-spot: mime clicking a “padlock” and nodding — “this page is protected”.