Digicard error code

Just had my card spat out of Siemens unit with a security code message and code 53. Did a printout and it showed 2 hours and 51 minutes of poa when I’d just been doing a mix of driving and other work.
Never come across this before, glitch or card goosed?

Card knackered.


From the error code list might be the tacho head most likely the card