German student came up with a case for smartphones

The problem of falls and broken smartphone screens is familiar if not to every mobile device owner, then half as a minimum. Gadgets constantly strive to slip out of the hands and fly to the floor, and screen replacement - the procedure is quite expensive. How can I safely protect smartphone screens?
The German inventor proposed a fairly simple and very effective defense option. He came up with a special protective cover that, when dropped, activates special springs, which in turn reliably protect the screen from dangerous contact with the ground.

Philippe Frenzel, that's the name of the German inventor, is currently going to start collecting money for the industrial production of his clever protective cover on the Kickstarter site.