title: App to server security: How can I authenticate an Android app/user on my server?
body: <p>I am building an app that will not use a login. It involves users making requests to a server where information is stored, and that information can then be sent to other users via HTTP post. What I am wondering is how can I ensure that post requests going to the server are coming from the app and not from some other device sending artificial posts?</p>