Coincidentally, I was at Isetan Scotts at Shaw Centre basement last night, buying Japanese pastries, and the shop counter had a electronic signature pad provided by OCBC Bank. The pad had writing offering the convenience of paying in your home currency, with foreign currency signs (euros, yen, etc). This is within the Singapore tourist belt area, so there is ample tourist traffic to offer the DCC option I guess. I was using a local cc at the time, so I couldn't verify if the DCC option is honoured. Just a data point for FT-ers who are ever in Singapore - do look out for these!

* for those FT-ers not living in Singapore, Isetan is a Japanese-brand supermarket targeting the more affluent and Japanese community here. OCBC Bank is one of the few banks offering merchant acquirer services, although DBS, UOB and Citibank are the more common acquirers.