You can measure the distance between you and the target very easily.

You need only two simple action to do !
Input your height, and aim the camera to the target.

This result is not exact as in a real measure.
But when you want to measure something instantly,
this would be usefull(or helpfull)

How to use
1) Open the configuration screen, and input your height.
2) Stand upright and lift the iPhone up to the height of your shoulder.
3) Aim the camera to the bottom of the target
* Displayed value is the distance from your foot to the bottom of the target.

Notice
* It's only for horizontal place.
* This application cannot measure the distance more than 50m.
* The result may contain some error because of camera shaking or camera
position.
* This application works on iPhone4, iPod touch 4G or higher.