I took my N7 to a kiosk at the local mall and had a Ghost Armor screen protector installed. It cost me $30 but I consider it money well spent. They are "experts" at installing screen protectors, clean the screen well, install it without bubbles, position it correctly, etc... If I ever have an issue with the screen protector I just go back there and pay $5 for them to install a new one. I've done this with all my phones and tablets and have been very happy. I tried putting screen protectors on in the past and always had trouble with getting them positioned, getting the air bubbles out or getting some dust particle or whatever trapped underneath.