Have you ever had a device that you wanted to make just a little bit more sonic? Have you ever been up late, measuring rooms and thought: "Could I approach this task with an iPhone? Sonically?" Fortunately for you, the good people at Laan Consulting have already thought of this. They've anticipated this eventuality and are now shipping the iPhone Sonar Ruler [iTunes link] for just a buck on the iTunes Store.
Yes, these good folk have imbued the iPhone with sonic goodness. As the video on the next page shows, the application sends short pulses and measures their return delay. Sure, you could go out to Office Depot and spend twenty bucks getting a far more reliable, dedicated unit but isn't it more fun to help support iPhone devs while really pushing the device beyond its design intent?
And don't forget: Bananas are good. They are excellent sources of potassium.
Thanks to Neekers