On Fri, 1 Sep 2017 12:23:05 -0000 (UTC)
John Levine wrote:
In article , wrote:
I wonder if an alert goes off if a denied card has been used recently and
the person could still be on the bus. Or whether for 1.50 its not worth the
hassle of calling the police.

What are they going to do -- stop the bus and frisk everyone until
they find the wicked card? At whicn point the holder will (quite
possibly truthfully) say, oh, sorry, I meant to use my other card.

Buses have CCTV. They can match the bad card with the person quite easily.
And what if the card was stolen in a robbery? I imagine the police would be
quite happy to nick the person.

--
Spud