Read the barcode with a Bluetooth barcode reader or the built-in camera.
The barcode read first is registered as a master code, and it is collated with the barcode read later.
Count the number of times the verification is OK.
When using a Bluetooth-connected reader, it is necessary to set the reader to SPP mode and set the data termination to "CR + LF".
Perform barcode verification using a Bluetooth barcode reader or built-in camera