There has been a lot written about extending the capacity of the Nexus 7 using an OTG cable and USB flash drives and how to load files from the USB to the Nexus 7 BUT can you take photos stored on a Nexus 7 and transfer them via OTG to a USB flash drive. I travel a lot in remote areas without wifi and plan to use the Nexus 7 as a photo back up device but after I load up as many as I can on the Nexus 7, I would like to drop these off to a USB drive, if I can.