Does anyone have a good write up on the tech, I work in IT and...

Does anyone have a good write up on the tech, I work in IT and am struggling to understand what they have done.

When you are talking about barcodes on something like a drivers license, you pretty much have to set the system up once with a view for it to work for decades as the replacement cost of printing new cards for every citizen is immense. I'd like to know what sort of encryption they have used since the encoded side (the barcode on the card) can not change.

I've been in and out for trading reasons, but wouldn't buy long term unless I could get a clear picture of their tech.