According to David Birch, director of Consult Hyperion, the two areas to watch are the Octopus card used for the Hong Kong public transport system, and Sony's EDY e-purse, active in Japan.
The average payment over Octopus is low, while those via EDY, which is designed to enable people to buy online, is larger, he said.
"RFID is wiping the floor with everything else," Birch said.
He warned delegates that the technology threatens to allow transactions independently of traditional banks or of the telecoms companies.
In Hong Kong, RFID cards with a range of 10cm, are used to pay for transport and for products such as newspapers. Octopus' target is to increase non-transit applications from the current 10% to 50% of e-payments, he said.