You're correct about the need of the data lines for power negotiation. The LockedUSB kickstarter is creating a USB condom but with power management: http://www.

You're correct about the need of the data lines for power negotiation. The LockedUSB kickstarter is creating a USB condom but with power management: http://www.kickstarter.com/projects/1137339450/lockedusb-adapter-usb-charger-firewall-and-power-o?ref=card http://www.kickstarter.com/projects/1137339450/lockedusb-ada... Note: I am in no way affiliated with the above kickstarter