Prevent crash on devices with misbehaving NFC

Copylefted libre software (GPLv3+) card management app. Stores your store loyalty and membership cards on your device, instead of having to carry them around. Supported barcodes: AZTEC CODABAR CODE_39 CODE_93 CODE_128 DATA_MATRIX EAN_8 EAN_13 ITF PDF_417 QR_CODE UPC_A UPC_E Moving data from other apps Within the app you can import cards and codes from files, Catima, FidMe, Loyalty Card Keychain and Voucher Vault. For FidMe you need to select the barcode type for each entry afterwards.