So when I buy my Freedom of the North West Rover and scan the Aztec code to create my user created pass similar to post 19, this is going to be fine if someone scans it, but if they visually inspect it at a gateline I would suggest they should be suspicious, especially if they don't intend to scan it.And the weakness is that gates correctly reject them and gateline staff just look at the details and let people through, rather than using a scanner to find out why it was rejected.
I'm not going to travel without the original PRT but where would I stand if I did? Do I have a valid ticket because I have a valid Aztec code on my device?