angol - magyar Egyéb Biztonság

A kettő ugyanazt jelenti. A wiki szerint annyi csak a különbség, hogy a piggybacking engedéllyel történik.

https://en.wikipedia.org/wiki/Piggybacking_(security)
To describe the act of an unauthorized person who follows someone to a restricted area without the consent of the authorized person, the term tailgating is also used. "Tailgating" implies without consent (similar to a car tailgating another vehicle on the freeway), while "piggybacking" usually implies consent of the authorized person.

http://www.datacenterjournal.com/design/what-is-a-mantrap-an...

Although a large portion of data center security focuses on virtual threats, such as hackers, malware and so forth, physical site security is nevertheless critical as well. A thief or saboteur in the flesh can cause as much—if not more—damage than one in cyberspace. One of the keys to strong data center security is careful control of access to the facility. But every security procedure can be compromised; even the most stringent multifactor biometric authentication system can be defeated, particularly in the case where an intruder “piggybacks” or “tailgates” legitimate personnel into a secure area. That’s where so-called mantraps can offer some benefits.

Köszönöm a válaszokat!
UJ