I'm looking for an event app like tasker that will do a system event on OTG unplugged. I have a shut down on power un plugged but OTG cables force tablets ( nexus 7 2013 ) to not charge when plugged in. There are OS hacks to get around that but I'm not really interested in that. So as a work around I was thinking what about on OTG un-plug? Not finding anything out there? any thoughts?