I bought a Georgian-style hardwood front door with 9 panes in the top half. I need some glass for it. Ideally, I'd like something that will allow me to recognise the identity of a visitor standing outside, while not permitting that visitor to easily see inside. I'm envisaging something that you have to get your eye up close to in order to see through it. I think I've seen some like that somewhere. Can anyone advise where I can buy such glass?
Also, which kind of glass is most suitable: toughened, hardened, or laminated? I've no doubt that the most unbreakable will be the most expensive. Can anyone give me an idea of the cost?