Me and one more person from BCIT decided to put a dent into tablet market share by designing what we call a "wireless touchscreen". It works as an additional display for your smartphone, that connects to it wirelessly by miracast and HID protocol.
http://tellusyouridea.strutta.com/entry/2610977 (please vote for our entry! You can vote every 24 hours)
We do expect that it will become a nice niche product for people who are not ready to pay for two expensive devices that overlap each other's functionality.
Technical details that I we disclose so far: >We use the most power efficient chip combination that we found for this task. BCM's people pledged that power saving features of their chip are the best on the market and that the chip can work unamplified on distances less than 3 metres. >Combined latency of WiFi chip and SoC with decoder is estimated to be 14 ms, which is less than one frame on 60hz >We will use an awesome display that will become sourceable this year. It is not gonna push on somehow meaningless DPIs, but will provide an class leading dynamic range (real contrast) and colour reproduction (10 bit internal enhancement circuit). >We will use upcoming hid-i2c touch controller from Synaptics with latest and greatest touch features >Both hid and miracast drivers are present on android 4.2+ devices and 4.1+ for some samsung devices. >Secret killer features. We are keeping them secret because of SSC contest terms.