Here's one way to make your iPhone more useful: Lasers. Simply plug the iPin Spatial Ruler into your iPhone, download the app, you have your own laser measuring device. iPin's first product was a laser pointer that plugs into the headphone jack of an iPhone. Pretty nifty, but its newest product, the Spatial Ruler, has many more practical applications. In addition to measuring the distance between an object and the phone, the iPin Spatial Ruler can determine the distance between two points on the object it captures, such as the length of a desk and iPin cleverly incorporates a zoom feature on the touchscreen to precisely dial in your measurements.