Ever wonder how QR codes are made?
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The reality is pretty interesting
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Something I recently realized: QR code is multilingual, e.g., one can encode Chinese/Japanese/Korean text in QR code; probably because it supports Unicode-8 which in turn supports multiple languages.
Some new thing I saw at CES: “Hybrid Code”, it looks like QR code but enhanced to also allow encoding of different types of data (e.g., graphics data, as opposed to just text for QR code). It will require new/different reader software, so not sure if/when it will become widely used.
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