Interesting challenge for everyone this is actually a difficult one. Has anyone worked with google phones lately? They have added a feature that prevents phones from getting factory'ed without forcing a new factory restore to continue without entering googles old account information that was previously associated with the phone. I guess its a new security feature that allows users to setup their account (personal or business related) using a password or pattern swipe to continue to login.
Having said that we have a bunch of google phones that are "bricked" because even after the phone is factory'ed it still remembers the last account that was setup and will not let the phone setup be complete without entering the credentials of the last user.
The impossible question is there any way to get around this so the phone can be recycled for someone else?