Glas Trosch AG Hytech-Glass designs, develops, manufactures & markets optical thin film coatings on flat glass. They have introduced new capabilities for the company's "Spymirror," which is now available as "Spymirror 20%" with higher light transmission, as single glass in thickness 3-12mm, and as laminated glass. Spymirror is a single-side coated one-way mirror that is used as partition between a supervised and an observational rear or for coverage of information displays. The reflection of the coated side is higher than for the glass side. Thus, the observer can look clearly into a bright illuminated area - minimum lighting ration between the areas of 1:10 - while for the observant, the partition acts as a mirror. There are unlimited design options for Spymirror in interior and exterior applications, ie, coverage of information displays, TVs etc.