There is an existing solution that is being moved into Raspberry Pi and it has a certain format distributed to people on pre-print cards or such. There is also mobile app but I am not positive that would be allowed modifying the code in barcode.If not will you have the opportunity to alter the specifications of the codes on the tickets/passes/tags/whatever that are scanned?
Whilst some codes do inclide check-sums, they are not (normally) part of the input stream. so you may want to add some strict formatting (even just leading zeros to make numeric data a fixed size) but ideally some checksum/CRC so you can detect the mixed read early, and not by a faiure in the database lookup later.
Thanks anyway.
Statistics: Posted by ertank — Thu Apr 18, 2024 7:12 am