Mantrap (access control)
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A mantrap, portal, circle lock door, tubestile, or access control vestibule is a physical security access control system comprising a small space with two sets of interlocking doors, such that the fir
Security portals with BR3 rated glass and steel construction for ballistics and burglary protection in a data center environment
Sallyport
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A sallyport is a secure, controlled entry way to an enclosure, e.g., a fortification or prison. The entrance is usually protected by some means, such as a fixed wall on the outside, parallel to the do
Mantrap (access control)
…Mantrap (snare) Sally port Optical turnstile…
A sallyport in the flank of a bastion at Dömitz Fortress in Mecklenburg-Vorpommern, Germany
A blocked-up medieval sallyport at the Cittadella in Gozo, Malta
The Old West Sallyport at Edinburgh Castle in Scotland
Razor wire topped metal fencing and sliding gate secure the entry to a vehicular sallyport, in Hagerstown, Maryland, U.S.A.