Wilipedia-Octopus Card
I've used it before, it's pretty handy. Octopus works at convenience stores too, walk in, grab what you want, wave your wallet at the sensor, walk out. Of course there's the privacy issue, but the locals don't seem to be bothered.
www.readwriteweb.com...
There are more than 19 million Octopus cards in circulation, over twice Hong Kong's population of 7 million. Over 95% of Hong Kong citizens between the ages of 10 to 65 use Octopus and there are over 10 million transactions each day.
Even better, the system proposed in the UK is Oyster, and with that system, you don't have to link your identity with the card.
On the flip side, Oyster may be used anonymously - so there isn't a requirement to link it to your identity, at least for its payment uses.
Darn convenient, and pretty neat, in a New World Order kind of way.
