Shock case for Iphone 4

A 3D printable case to prevent cracking on the Iphone. Tiny springs in each corner of the case absorb the shock of a phone dropping. I have no idea whether or not it will work, but the idea popped into my head one day.
A 3D printable case to prevent cracking on the Iphone. Tiny springs in each corner of the case absorb the shock of a phone dropping. I have no idea whether or not it will work, but the idea popped into my head one day.