Every one of your users has a computer at home, maybe a laptop, definitely a phone, and likes to log in from someone else's computer from time to time. They're carrying your data around, but often not your security policy. You know how hard it is to match policy form device to device, location to location. If only it were …
"So what are you waiting for?"
People to give up on the idea of BYOD except in the certain limited scenarios that we've always allowed anyway?
Someone obviously didn't read the comments on the previous announcement of this.