In general, SCIFs are designed to be secure environments that are isolated from the rest of the facility or building in which they are located. They are usually constructed with reinforced walls, floors, and ceilings to protect against unauthorized access and eavesdropping. As a result, SCIFs often do not have windows, as windows can provide a potential avenue for compromise of the secure environment.

However, it is possible for a SCIF to have windows, provided that they are designed and installed in a way that does not compromise the security of the facility. For example, the windows may be made of a material that is difficult to see through, or they may be coated with a film that blocks electronic signals. In some cases, the windows may be placed in locations that are not visible from the outside, or they may be installed in such a way that they cannot be easily opened or breached.

Ultimately, the decision to include windows in a SCIF will depend on the specific security needs and requirements of the facility. It is important to carefully consider all potential vulnerabilities and to take appropriate measures to protect the security of the SCIF and the sensitive information it contains.