There isn’t currently SmartCard support in the CW-Lite. It’s something I’m working on, and in fact there is a new (but not yet released) adapter board with a SmartCard socket.
As such right now if you want to use a SmartCard with the CW-Lite it requires some level of your own work. In particular an adapter to perform reads/writes from the smartcard will have to be created, and you can add an appropriate current shunt.
Be careful if using an external reader as many are 5V, but the CW-Lite only supports 3.3V! Inputting any 5V signals will cause damage.
What sort of specific cards are you looking to talk with?