That you lock the door behind you when you leave the house goes without saying. But what kind of door is it actually? Is it made of steel or plywood? Or even partially made of glass? If so, what kind of glass? And how is it anchored? What does the lock look like? And what about the patio door? And the basement door? Are all windows locked, including those on the first floor? Do you have a light well grate? How is it secured? These questions are from the guide of the Swiss Crime Prevention (SKP) House of the Cantons Speichergasse 6, P.O. Box, CH–3001 Bern The brochure is available at every police station in Switzerland and at every police department of the national police of the Principality of Liechtenstein. The brochure is also available in PDF format in German, French, and Italian.