Using real-time camera trickery, Transparent Screen for Android makes your mobile device "see-through" so you can use it to text or check e-mails while you're walking. It's a fun tool that could definitely come in handy for the multitaskers among us.
After downloading the free app from the Android Market, fire it up and adjust the settings. You can manipulate resolution, camera orientation, and transparency level. Once you're done, tap Start and you'll be able to use your device as normal, but you'll see a semitransparent layer of whatever your camera sees in the background of your activity. This way you can text or do pretty much anything else while walking, and your view will be slightly less obstructed. Of course, that's not to say that this app guarantees any kind of extra safety. It just makes it a bit easier to see what's going on in front of you while you're fiddling with your Android device. When you've had enough, go back to the Transparent Screen app in your app drawer and hit Stop.
From what I've seen, the Transparent Screen works as advertised. The extra settings are nice, and I was able to shop the Android Market and send texts, while viewing, in real time, what was behind my phone. That said, I still think Transparent Screen could benefit from some speedier performance. Most of the time, I found that the app couldn't quite track as fast as I walked.