Is there any kind of usb device that you can put between your usb port and a usb stick that would limit the device to charging or just reading the usb device (but not writing to the computer)?<p>Or was the digital condom idea just for sh*ts and giggles?<p>(For charging only I guess being struck about using a usb charger and not a device would be safer? In multi-port chargers can devices use the multiport as a hub to connect to other devices that are charging?)