Although no picture is taken when printing the pass, some ski lift access control systems are able to detect if a single pass is used by different persons.
This applies to some systems that use barcode or RFID passes and turnstiles. For instance, one of the newest Skidata systems takes a picture of the user at the turnstile at each passage. Then, theThe guard inside the booth near the turnstiles is able to see on a computer all the different pictures that were taken in association with the pass... thenThus, any swapping can be easily busted.