I am about to create mobile applications (iOS, android, ..) to support existing web application and now thinking how to provide a secure API (ASP.Net Web API) from my web to our mobile apps.
OAuth seems the best way to do it. From what I understand, it is designed to enable 3rd party applications written against our API. But I only use the web services just for my own apps.
Do I need to go with OAuth, or is there any simple way?