I work for a University and we are considering turning our Student/Staff ID cards into digial cards that will go into Wallet. I know the process for creating these and we have done quite a bit of testing with this, so this part is easy.
However, someone brought up a very good point. What would stop someone from getting ahold of another Student/Staff members phone, taking a screenshot of their ID card, and then just using that stolen image on their own phone to pay for things at the cafeteria using the bar code reader? Are there ways to prevent this sort of fraud?