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How Does a QR Code Actually Work?

QR code is like a secret message hidden in a square. Imagine you have a bunch of tiny squares on paper, some are black, and some are white. When your phone scans it, it reads these little squares to find out what's inside the message, just like solving a puzzle.

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Examples

  1. A QR code on a restaurant menu lets you scan it with your phone to view the full menu online.
  2. You see a QR code on a bus stop, and when you scan it, it shows you the next bus arrival times.
  3. Your friend draws a simple version of a QR code in the sand, it only says 'Hello!' but is still readable.

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Categories: Technology · QR Code· Scanning· Encoding· Binary · Text is available under the Creative Commons Attribution-ShareAlike License.