In article ,
Iain wrote:
For a while now I've been tempted to do something like that so that the
Oyster sits somewhere halfway up my forearm, and then go to one of the
more touristy central London tube stations and go through the barriers
by waving my arm over the oyster scanner and at just the right moment
clicking my fingers with a flourish. Very puerile but I'd love to see
the expression on people's faces!

Wave a shortish (8-12 inches or so) stick at the gate while muttering
"Alohomora".

At Kings Cross.

--
Mike Bristow - really a very good driver