On 3 Aug, 20:39, "Paul Scott" wrote:
"tim....." wrote in message

...



Adding new bits to a mobile buggers up the standby time.
And as longer standby time is the holy grail that the
networks keep demanding the extra bits don't happen
until everyone is sure that there is a need.

Er (apart from space taken up) why would a separate but embedded rfid device
cause power problems? There doesn't seem to be much of a problem with the
standby time of an Oyster card... If the mobile is able to interrogate its
chip to check balance or history I would have thought consumption would be
trivial compared with most other important functions like ringing, calling,
texting etc...

Seriously though, what size is the actual device embedded in the card?
Perhaps a way of mounting it on say a watch strap, or bracelet or some such
might catch on...

Paul


Basically, in a simple implementation, the shell/casing of the mobile
is an RFID card in another form.

I can however imagine there might be a desire for a more complex
integrated implementation where the mobile device was to the RFID
element - for example so one could receive things over the air that
were put on the RFID chip (e.g. topping up the PAYG credit balance
over the air for example). Such an implementation might require the
mobile device to have battery power.

I don't see a massive benefit of the simpler implementation (which
AIUI is all that anyone has really proposed at present) - though that
said it might be popular and handy, as people could notionally
dispense with carrying around a wallet/purse.

The latter implementation could lead to some innovative services, but
it could also just be a solution in search of a problem. It could also
get horrendously complicated, thus breaking that rather sensible rule
- keep it simple!