[QUOTE=kebosabi;10465891]Sorry to bring back a relatively two month old thread, but I just got back from an extensive vacation from Japan, South Korea, Hong Kong and Singapore. The days I spent there showed me that contactless technology does indeed work, greatly speeds up the process at the cash registers and even eases commuting rail travel./QUOTE]
The chip-based transportation methods (Hong King, Singapore, Londone come to mind from our travels) are simply fantastic! As you mention, it would make things so much simpler here. It's probably been mentioned elsewhere in this thread, but the Starwood Amex does have it. But I can't speak for the Citibank offerings.
Cheers.