Hi all I have got a query for a ATM software from one of our clients. Can any one give me an idea on ATM withdrawal software. My guess is that ATM machines will be installed with Windows CE and there will be server application which can be developed using WCF. From Windows CE application i can call the WCF services and communicate with the server over TCP/IP. Here i have to take care of the data security and all. This is my idea. Am i thinking in the right way. Can any one comment on this.