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    This is the kind of thing I love to read about. Amazing that you were able to decode it so well by decompiling some lost phone app.

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      This is a great post, I used a train today so used the web tool the author wrote to scan my ticket and it worked.

      Would be interested to learn more about the bar code too, I always assumed it was a QR code so learning about Aztec codes has been fun

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        Reminds me of Christopher Soghoian’s boarding pass work from way back when. Good job!