cross-posted from: https://lemmy.ml/post/33289366
obligatory I know this is not a linux question, but you provide good information and alternatives
qr code is the squares code that, if used with a qr code scanner redirects me automatically to a website or to download a pkpass file, right?
after downloading said pkpass file to my android, any wallet application like fosswallet should recognize it and add it to the local library (on my android device), right?
what other formats do transportation authorities use?
To those residing in Germany, is pkpass use widespread there? What are common formats used there?
Your generic “barcode” for something like a UPC is considered a 1D barcode and uses things like the spacing of the lines and thickness to encode data. Although some 1D barcodes can detect the barcode is damaged they cannot do error recovery.
Your 2D barcodes, like QR or Data Matrix, store data in both directions and depending on format can have varying levels of error correction (duplicate data) built into the barcode. They also obviously can take up less room and hold the same or more data as well. You do need a scanner that can do 2D barcodes though, as not all scanners will read them.