So what do you say?
Does any one else think using the back of their android for input would be comfortable?
Do you know of any other devices that could achieve something similar?
I remember a phone that had a small touch screen on the back but I don't remember what it was called. It was mainly used to change volume when in a call.
Would you rather tape one of these to the back of your phone and use it's buttons instead?:
![Image](http://www.androidpolice.com/wp-content/uploads/2013/08/nexusae0_wm_IMG_11021.jpg)
btw, for those who don't know: the Yotaphone 2 has an e ink display (like the Kobo devices) on the back and it's also a touch screen.
![Image](https://yotaphone.com/static/devhub/images/landing2/gender/img_02_en.png)