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No Tailgating sign at Apple Inc. office. In security, piggybacking, similar to tailgating, refers to when a person tags along with another person who is authorized to gain entry into a restricted area, or pass a certain checkpoint. [1] It can be either electronic or physical. [2]
Security lighting to prevent intrusions may be counter-productive. Turning off lights halved the number of thefts and burglary in Övertorneå Sweden. [2] [3] A test in West Sussex UK showed that adding all-night lighting in some areas made people there feel safer, although crime rates increased 55% in those areas compared to control areas and to the county as a whole.
Early exit signs generally either were made of metal and lit by a nearby incandescent light bulb [4] or were a white glass cover with "EXIT" written in red, placed directly in front of a single-bulb light fixture. A flaw in these designs was that in a fire the power to the light often failed.
Signage is the design or use of signs and symbols to communicate a message. [1] [2] Signage also means signs collectively or being considered as a group. [3] The term signage is documented to have been popularized in 1975 to 1980. [2] Signs are any kind of visual graphics created to display information to
The next major technological innovation in neon lighting and signs was the development of fluorescent tube coatings. [22] Jacques Risler received a French patent in 1926 for these. [5] Neon signs that use an argon/mercury gas mixture emit a good deal of ultraviolet light. When this light is absorbed by a fluorescent coating, preferably inside ...
A metal doorframe with a strike plate built in: in other doors this would be a metal strikeplate in a wooden doorframe. The term door security or door security gate may refer to any of a range of measures used to strengthen doors against door breaching, ram-raiding and lock picking, and prevent crimes such as burglary and home invasions.
Modern fire standards often mandate that doors be fitted with crash bars in commercial and other occupancies where mass evacuation may be slowed by other types of door openers. They are sometimes intended solely for emergency use and may be fitted with alarms. However, in many buildings the crash bar is the primary mechanism for opening a door ...
Electronic signs may be used indoors or outdoors. The display technologies are varied and changing quickly. Because of new display technologies, electronic signs are able to present more clear, colorful, and vivid images. Animated electronic signs gradually replace traditional static signs and increasingly take signage market share.
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