On 19/08/10 09:00, Roland Perry wrote:
In message yBWao.43170$Dt3.759@hurricane, at 20:34:54 on Wed, 18 Aug
2010, " remarked:
So it's a kind of "three tier" Oyster card scheme[1]. More complication
for customers to get their heads round

[1] Basic, registered, and registered + auto-topup.

Hardly.

Indeed, we are now told it's at least 4-tier!

I strongly suspect that you can set up auto-topup within only an online
account, but without true registration (can anyone confirm?). In which
case it's no longer a heirarchy.