On Sun, 1 Jun 2008 04:51:55 -0700 (PDT), Chris
wrote:

Because Electron & Solo require a real-time connection to your account
to check current balance, and that can't be got by theon-train
equipment.

It could quite easily be done by use of mobile phone technology - but
it would be expensive, and more importantly, very slow.

Neil

--
Neil Williams
Put my first name before the at to reply.