Facial recognition equipment; hygrometers; computer programs, downloadable; encoded key cards; identity cards, magnetic; time recording apparatus; flashing lights [luminous signals]; sound transmitting apparatus; electric and electronic video monitoring equipment; detectors; electronic key fobs being remote control apparatus; electric door bells; locks, electric; peepholes [magnifying lenses] for doors; anti-theft warning apparatus; theft prevention installations, electric; biometric fingerprint door lock; electronic access control systems for interlocking doors