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Unveiling QR Codes: Understanding, Purpose, and Communication

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CRYPTOGRAPHY LESSON 3A LESSON OBJECTIVES
Lesson 3A • To understand what kind of information is coded onto a QR code • To understand the purpose and use of QR codes • To use a QR code to communicate information

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Cryptography. A simple example…. Text: U-M ASCII Encoded: 01010101 00101101 01001101 “Encoding” refers to convenient reformatting. No secrecy here. Call it plaintext. Let’s “Encrypt” it, i.e. hide its meaning from nosy 3 rd parties. A simple example….

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