4 ms·
"Interestingly enough, track 12 does not only contain information pertaining to the last use, but also to the use before that." This might explain why the syst
by acomjean 11y ago
"Interestingly enough, track 12 does not only contain information pertaining to the last use, but also to the use before that."
This might explain why the system sometimes asks you to "Swipe again" when going through the turnstiles. maybe the write failed?
In the 90s the system had tokens. Someone figured out a cheap way to game the system using inexpensive South American coins..
https://news.google.com/newspapers?nid=1955&dat=19951206&id=XVwxAAAAIBAJ&sjid=hKYFAAAAIBAJ&pg=2338,4467511&hl=en https://news.google.com/newspapers?nid=1955&dat=19951206&id=...
- bosdev 11y agoWouldn't the most likely reason to "Swipe again" be that the read failed?
- gcr 11y agoThe display sometimes reads "Swipe Again At This Turnstile," which might imply that data corruption would occur if you swiped elsewhere...
- ceras 11y agoI once saw that when using a pay-per-ride metrocard and swiped at a different turnstile. I ended up having two rides deducted instead of just one, so I lost a swipe.