An article relating to this blog post on Finextra:
American Express ditches contactless keyring
American Express is discontinuing its Express Pay contactless payments key fob following poor customer take-up of the device.
One thought about RFID with the contactless keyring or indeed Bank Cards or Travel Cards that seem to be springing up everywhere with varying degrees of success.
Limited channels, i.e. RFID can only reach say 15-25% of channels and requires readers. Add Optical Reading and at far less expense you access another 60% of channels - newspapers and tv are just two examples where a chip just isn't going to appear for quite
Make it a win win and combine RFID with Optical Readers on Mobile and you get access and interaction 24/7/365 anywhere in the world.