hi its is possible to store passowrd, for example a user buy my app, then when he start the app the app give him a "licence password" for the app, the password have to be stored on a server.
also i dont know if its possible to check if the password exist, and how to check if the app is runing on 1 computer only, i ned to make an app who can be used in one computer by one user only (like almost every steam game)
thanks