This isn't the first time you've heard of EPOS or XTR, but it's been quite some time since we've checked in with either of the outfits. So, imagine our surprise as we stumbled on new developments from each company as we perused the Texas Instruments booth at MWC. In the case of EPOS, we're shown a stylus that, in addition to offering traditional physical touch input, also allows users to interact with a device via ultrasound. The system is built upon TI's OMAP4 platform and requires that
