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POEncoding binary barcode in Passbook
 

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  1. POEncoding binary barcode in Passbook
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    <p>I have to integrate Passbook with a website that provides PDF417 barcodes with data encoded in <em>binary</em> (as opposed to text), such as this:</p> <p><img src="https://i.stack.imgur.com/APgwv.gif" alt="PDF17 barcode encoded in binary"></p> <p>Is there any way I can encode this binary chunk in <strong>pass.json</strong> so that Passbook displays it on the iPhone identically to the original picture?</p> <p>Again, I <em>cannot switch</em> to text-based barcodes because I <em>do not own</em> the data. Just for clarification, the attached picture contains a PDF417 barcode that, when decoded, contains non-printable characters, such as the NULL character, which is why I refer to it as <em>binary</em>.</p> <p><strong>UPDATE</strong></p> <p>This is how the image decodes into a byte array:</p> <pre><code>01 00 01 00 02 00 E7 C4 B5 96 B8 42 94 B3 B4 75 1A D1 F2 38 92 EA B5 0E 17 5D 0B 2A AA 64 18 CC 28 62 86 E5 74 5D A3 89 09 12 6E D5 7A 1A C9 EE BF 23 9C E1 60 AD 9E DE 92 6D E5 79 99 C7 91 F1 6A D5 82 2E B6 E3 81 24 F8 0A F8 E6 44 5D 56 D2 00 00 00 00 00 00 40 0D 00 09 20 23 00 96 13 5C 10 EC 0C EA A3 E8 A3 20 30 4B 2A 20 7D 0F BB DF F7 5E FA 1E 76 F7 40 20 10 08 04 02 81 40 20 30 A3 D5 6C 1A 04 76 14 10 </code></pre> <p>This is how I try to transform it into a <em>utf-8</em> string:</p> <pre><code>{"message": "\u0001\u0000\u0001\u0000\u0002\u0000\u00E7\u00C4\u00B5\u0096\u00B8\u0042\u0094\u00B3\u00B4\u0075\u001A\u00D1\u00F2\u0038\u0092\u00EA\u00B5\u000E\u0017\u005D\u000B\u002A\u00AA\u0064\u0018\u00CC\u0028\u0062\u0086\u00E5\u0074\u005D\u00A3\u0089\u0009\u0012\u006E\u00D5\u007A\u001A\u00C9\u00EE\u00BF\u0023\u009C\u00E1\u0060\u00AD\u009E\u00DE\u0092\u006D\u00E5\u0079\u0099\u00C7\u0091\u00F1\u006A\u00D5\u0082\u002E\u00B6\u00E3\u0081\u0024\u00F8\u000A\u00F8\u00E6\u0044\u005D\u0056\u00D2\u0000\u0000\u0000\u0000\u0000\u0000\u0040\u000D\u0000\u0009\u0020\u0023\u0000\u0096\u0013\u005C\u0010\u00EC\u000C\u00EA\u00A3\u00E8\u00A3\u0020\u0030\u004B\u002A\u0020\u007D\u000F\u00BB\u00DF\u00F7\u005E\u00FA\u001E\u0076\u00F7\u0040\u0020\u0010\u0008\u0004\u0002\u0081\u0040\u0020\u0030\u00A3\u00D5\u006C\u001A\u0004\u0076\u0014\u0010";} </code></pre> <p>However, Passbook does not display an equivalent barcode. In fact, it displays just a few first bytes.</p>
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    1. COEven if you do not own the data, maybe you could get access to the binary encoding format? The you should be able to decode the data and pass it as text to PassBook.
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      1. USJohan Karlsson
    2. CO@Johan Karlsson: I can decode the pass. As a result, I am getting a binary byte array containing zeroes at the beginning. The problem is, I do not know how to pass this byte array to **pass.json**.
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    3. COyes you can encode the bitstream what code have you tried and where is it failing you?
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