Rhino glass was a project that used Kickstarter last year to help develop and produce and end product that could end the problem of cracked screens.
The product is a clear piece of film that you stick onto your device and it claims to withstand some pretty heavy impact as seen here http://www.evolutivelabs.com/
The product is aimed at smartphone and tablets but we also think it could provide a lot of protection for certain rugged PDA’s screens too. However it will only help against impact of the touchscreen in our view, the shock and damage caused internally which damages most LCD’s we repair will still be an issue but it should still help stop a lot of breakages and is well worth it.
We’ll be testing some soon if we can find someone here willing to let their iPhone be a guinnea pig!