Using the Ipad2 as a Power-Grid device. Works great. 
The package:
https://app.box.com/s/3zx6yniqtwnkomrnlgdi
Ipad pic:
https://app.box.com/s/859gkvhkn8cietwh6gwd
The package:
https://app.box.com/s/3zx6yniqtwnkomrnlgdi
Ipad pic:
https://app.box.com/s/859gkvhkn8cietwh6gwd