Lock Types

What does a door lock control?

entry and exit from a building, room, or another area

What issue may determine whether a guard is needed with a door lock?

risk of tailgating and piggybacking

How does a key-operated door lock work?

prevents the door handle from being operated without the use of a key

How is an electronic door lock operated?

by entering a PIN on an electronic keypad

What can a badge reader use instead of a PIN?

a hardware token

What types of tokens can badge-reader locks use?

a basic magnetic swipe card, a cryptographic contactless smart card, or a key fob

Which door lock tokens are much more difficult to clone than ordinary swipe cards?

cryptographic contactless smart cards and key fobs

What is a mobile digital key?

a virtual key that resides on the user's smartphone

How does a mobile digital key communicate with the door lock?

Bluetooth or NFC

What is an access control vestibule used to limit?

the flow of people through a particular area

What biometric door lock uses a small capacitive cell to detect the unique pattern of ridges?

fingerprint reader

What can prevent fingerprint reader readings?

moisture or dirt

What biometric scanner uses visible and/or infrared light to record and validate the unique pattern of veins and other features in a person's hand?

palmprint scanner

Which biometric requires the user to make an intentional gesture to authenticate?

palmprint scanner

What biometric identifies the pattern of blood vessels in the eye?

retina scanner

What are the tradeoffs of retinal scanning?

expensive, relatively intrusive and complex, and can produce false negatives from diseases such as cataracts

How does facial recognition unlock a door?

a built-in camera captures the user's image and compares it with stored templates previously enrolled

What are the tradeoffs of facial recognition?

extremely secure, fast, and accurate, but costly to implement

What does voice recognition compare to unlock the door?

the voiceprint

What can affect voice recognition?

background noises, voice changes, and malicious users mimicking a valid user's voice

How do many voice recognition systems increase security?

require the user to speak a passcode along with the unlock command

What general issues apply to biometrics?

privacy issues with capturing and storing personal information and discriminatory issues involving people who cannot make the required bio gesture

What are Kensington locks used for?

secure a laptop or other device to a desk or pillar to prevent theft

What do chassis locks and faceplates prevent?

the covers of server equipment from being opened

What can chassis locks and faceplates prevent access to?

external USB ports and internal fixed disks

What do lockable rack cabinets control access to?

servers, switches, and routers installed in standard network racks