Mobile devices are getting more and more powerful, if you get a mobile phone the odds are it will not just be a phone but a camera, organiser, music player, video player and web browser too. You can also extend the capabilities of you phone by downloading applications and games to it. One of the most significant aspects of this is that we are talking about technology that many people already own, not just-released or niche devices, so there is a sizeable potential audience for new applications.