Nope the fare inspectors have the same inspection device that go transit and the UPX inspectors have that can scan a presto card and see if you have paid a fare. If they see you haven't paid a fare they will write you a ticket.
I've never actually seen them use it on the TTC.
I rarely actually see them inspecting. There's always some at Spadina, but I've gotten checked a handful of times only.
And twice with Presto, I just show the card and they don't actually check it.