... in a place for 3-10 minutes, the user can Send SMS "stockade+password+ space +latitude,longitude;latitude,longitude" to unit to ... in a place for 3-10 minutes, the user can send SMS "move+password" to the unit, then the unit will reply ... begin123456 begin ok 5.42 Change password password123456 666888 Change password ok 5.5.1Resume password resumepassword resume password,password is 123456 5.5.2 ...