[Blink]

I stumbled upon this great concept. The data pins are shorted together and kept disconnected from the client device, so only power is transferred. I might make a few of these later (whenever I can get hold of a new soldering iron, or butane)
https://n-o-d-e.net/usbcondom4.html

Video:


Here's some links as to why this should be used:
http://money.cnn.com/2017/02/15/technolo...index.html
http://thediplomat.com/2013/08/fake-appl...ur-iphone/