Understanding Qualcomm's ImproveTouch
 

Although the Xperia Z4 Tablet was announced as far back as MWC, it wasn’t until recently that the enhanced noise rejection of the touchscreen was really shown off. At first it wasn’t exactly clear how this was accomplished, but it turns out that this is a Qualcomm technology at heart, namely improveTouch. For those that are unfamiliar with this technology I've attached a video from Qualcomm demonstrating the technology below.

http://www.anandtech.com/show/9523/u...s-improvetouch