Sekai Camera is an iPhone-exclusive social tagging service developed by Tokyo-based mobile application provider Tonchidot. Sekai is getting lot of attention of iPhone users because of few interesting features which is going to be integrate with iPhone.

 It will use the iPhone as a mobile information terminal, linking the real world with tags generated by Sekai Camera users. for instance if you walk through a shopping mall, Sekai Camera tags will show you where you can find something to eat and  additional information about a certain product tagged before.