Two German inventors for their invention sought help of Crowdfunding campaign, and have already fulfilled goal and exceeded 20,000 dollars. The project is called ProtectPax, formula of liquid glass consists of nanoparticles of titanium dioxide that fulfill microscopic irregularities in the glass, and secure it by creating a thin invisible layer. The screen is necessary to smear with a few drops of liquid, rub with fabric and let it dry. Protection has an expiration date of one year, protects the screen from scratches, grease stains and water. 17 dollars is initial price for the two packs of ProtectPax.