Public Installations and buildings have an exceptional set of features that make security and safety requirements different from those of other buildings. They must simultaneously accomplish two things: protect valuable items and guard bene factors. On the other hand, they must remain open to the public and be designed to be welcoming and relaxed spaces to visitors. Because of this, traditional “defense-in-depth” security is knowingly compromised because of the need to let patrons come near valuable assets, so a more innovative approach to security is required. Good security in these spaces must be minimally intrusive but also offer maximum effectiveness.