I recently downloaded a boarding pass wallet to my phone and it's able to generate 4 different types of barcodes, the normal Aztek and PDF417 but also QR and Da
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united-airlines
north-carolina
nicop
ipoh
georgia-usa
reunion-island
edinburgh
aktau
train-stations
worldwide
jordanian-citizens
crk
laotian-citizens
antwerp
mobile-operators
dushanbe
cologne
colombia
dmk
scl
greek-citizens
luggage-storage
societe-hop
repeat-visits
swiss-citizens
turks-and-caicos
folk
danube
melbourne