Disclaimer: This is not an official Snapper product, it is an independent proof of concept with no warranty.
Quick history lesson: Snapper and 2degrees launched Touch2Pay over two years ago on NFC enabled Gingerbread handsets. Since then we have had also seen Google Wallet and most recently Apple Pay.
Executive summary: WindowsPhones with NFC and 8.1 can use the 2degrees Touch2Pay SIM, the Nokia Lumia 735 and 830 can also communicate with contactless cards.
Now the story
WindowsPhone 8.1 has changed many things, including
mechanics of applications talking to the UICC
new NFC driver for NXP PN547
If you put a 2degrees Touch2Pay SIM in a Windows 8.1 NFC phone you can enable the "Tap to pay" option. This is under Settings/System/NFC/Tap to pay. You can set it to work while the phone is unlocked, while the screen is on or at any time. If the Snapper applet has been initialised and funds loaded it should work. It is strongly recommended that you first confirm the SIM works as a Touch2Pay SIM using a supported Android handset and the SnapperMobile application.
MyFeeder for WindowsPhone 8.0 was a cumbersome affair where it communicated with an external card reader using Bluetooth, because that is all you could do.
MyFeeder for WindowsPhone 8.1 has been rewritten to use a Touch2Pay SIM if present, and on newer phones such as 735 or 830 it can read standard Snapper cards.
Hopefully Anthony can now try the new application with a Touch2Pay SIM, or read a Snapper on a 735 or 830!
Application has been tested on Nokia Lumias 820, 930 and 735.
Alas the flagship Nokia Lumia 930 cannot read contactless cards. It has the capable hardware, it doesn't have an appropriate driver. Microsoft needs a business case to implement the feature for the 930 and others.
Shameless plug: MyFeeder is also available for Windows 8.1 and will even run on an ARM Surface RT with care. Requires NXP PN531 ( eg Snapper Feeder ) and correct drivers installed.