This week's book giveaway is in the Java in General forum. We're giving away four copies of Think Java: How to Think Like a Computer Scientist and have Allen B. Downey & Chris Mayfield on-line! See this thread for details.
I have a jar file which is residing on the web server. I want to do 2 things: 1. I want people to be able to send a code to a Mobile Phone number and that will automatically trigger a url which will be sent to thier phone via SMS so that they will be able to download the game but the url should only be abel to be used one time? 2. that same person does not send it on to his friend like some sort of encryption? How is that possible. Any kind of help or link to any site will be appreciated