Sound, Radio & InformationCoding Theory
Broken QR Codes Still Work
Rip out part of a QR code and it can still scan
The QR code on that sticky café table is scratched and torn, yet your phone reads it in a blink. How?
You'll find out
- How a code rebuilds what it lost
- How much damage is too much
- The one spot you should never cover
Why it matters
The same repair math keeps scratched CDs playing and brought Voyager's photos home from Neptune.
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