Ok, what I found out is this product is a laminate applied on the inside of your windows. From what I know, this won't really prevent your glass from breaking, but it will hold the glass in place and will be quite difficult to penetrate even after tha glass is broken.
But this also means, if anybody break your window, you will still have to replace your window and relaminate again later.
I wonder, is it possible to laminate two layers? (inside/outside) Mebbe this can help prevent the glass from even breaking in the first place. But I think might be double the price wor... :p