As much as N-Trig is an old hand at supporting styluses, it's had to focus on tablets and other larger devices due to technology limits: the HTC Flyer is about as small as the company has gone to date. A new version of N-Trig's DuoSense chipset family could be the ticket to going to much smaller sizes. The new 4000 series condenses both pen input and multi-touch finger gestures into a combination of one chip and one sensor, letting any entrepreneurial device maker stuff the two control methods into a handheld device with as little as a 5-inch disp