[digianarchist]

TTC stations in Toronto will not allow you to enter using Presto at the same station you have already entered. I assume this is to prevent "pass backs" but it also affects those that have entered on the wrong side of certain stations.

The solution in absence of an attendant. Jump the barriers.

[aix1]

What's a "pass back"? I'm guessing some form of fare dodging, but could you explain the mechanics?

[duskwuff]

I imagine it refers to entering the station using a ticket, then passing that ticket to someone leaving the station. (And, presumably, relying on someone else doing the same thing at the other end?)

[digianarchist]

Correct except fares are not routinely checked on the TTC so once you've entered you shouldn't experience any issues.