It's hard to justify rolling into summer school with just an electronic wooden ruler, but pairing that with one of N-trig's new Digital Pencils just seems like a match made in detention heaven. The company responsible for pushing out that snazzy DuoSense technology back in 2008 is hitting back with yet another digital writing instrument, with this particular one designed to work with multitouch devices. Being a part of the DuoSense family, the battery-powered device c