Transparent Screen is basically a software that will make it completely transparent interface of your phone, sending in the background see what your camera, enabling you to walk down the street using your smartphone and not stumble in any manhole or maybe, why not? The software is totally free and in our test was run pretty well only in very low resolutions, however, more than enough to understand what is happening in front of us.
Maybe you will never use a similar software, but certainly worth a try.
Transparent Screen can be found here at Android Market
