The current 'thing' to watch out for is the ecard with a number >1,000,000!!!!!
Sounds like a binary card number to me!!!0!!
Seriously, why do we have to watch for them? Is it because they are type 9 cards and will not work in the older (square SI boxes)?
We are using type 9's as hire cards for the elite course at the Midlands next week, but testing has found no issues. But we only have the newer SI boxes in use.
Anything else we should be aware of?