Clive D.W. Feather
clive at davros.org
Tue Dec 2 14:43:58 GMT 2014
Peter Sommer said:
>> Am I right in thinking that these are either account based, or that
>> the cards/phone take care of ensuring that double-payment does not
>> take place?
> Yes. As far as I know NFC transactions go through a regular credit
> card account, at least mine do.
> There is another thing you might like to look at. The Seoul transport
> system uses a Oyster-like card which can also be used for other
> low-value transactions like coffee and snacks. But as far as I know
> the value is loaded from a bank account.
I don't know about Seoul, but Hong Kong has a travel card called Octopus
that is accepted in lots and lots of places for payment (I've even seen
little sweet dispensers in supermarkets that *only* take Octopus). It's
not tied to a bank account - you can charge it with cash at metro
stations, just as with Oyster.
Clive D.W. Feather | If you lie to the compiler,
Email: clive at davros.org | it will get its revenge.
Web: http://www.davros.org | - Henry Spencer
Mobile: +44 7973 377646
More information about the ukcrypto