I have not tried it, just seeing if anyone here has has any experience with this product. http://usa.nanostate.co/ This started as an Indiegogo project (http://www.indiegogo.com/projects/liquid-sapphire-scratch-resistant-touch-screens). Wipe it on and supposedly uses nano tech to adhere to the glass and create a sapphire glass film? They say it is permanent and prevents scratches. They also have other products that water proof devices and more. I know real sapphire glass is very hard, but did not know that it was available in liquid form.