Neil Williams wrote

On 4 Jul 2009 23:13:36 GMT, "Michael R N Dolbear" wrote:

As I have previously noted, putting the touch out devices outside at
bus stops rather than inside the bus doesn't require more advanced
anything. Thus in Tfl terms a surcharge would be added on entry, say
on
all routes that go outside the zones. Boxes would be installed at
all
bus stops on line of route which would refund the surcharge on
touching
out if the stop is within the zones.

Though it might create an issue where people for whatever reason
(e.g.
traffic conditions) end up leaving not at the stop.

Same problem in Singapore, if discipline there allows doors to be
opened when not at a stop. If you don't board another bus or your
onwards route doesn't pass the stop before timeout it would cost you.

On the wish list (Paul C's more advanced technology) how about mobile
phones ?

The smartcard and mobile would work out that you were no longer on a
bus and your location was appropriate and give the refund.

--
Mike D