There have been reports of even one of these being installed in Venezuela, and it seems that people is using them, even with the disastrous fees that they are collecting.
Makes sense in Venezuela seeing as how their currency is all but worthless. Bitcoin might not have been a great choice for an alternative currency this past month when they had the power cuts. In fact if the locals were using any cryptocurrency for day to day transactions they would have been screwed unless they could somehow power their cell phones and had their wallet on the phone.
Goes to show that to be completely safe you need your own power generators (solar power on the roof or some such).