challenge people
an example of a physical security countermeasure would be a tether on a digital camera displayed for sale.
Challenging is a physical security measure that is appropriate in certain situations. Places challenging people for security measures is appropriate are prisons and military sites.
Some examples of physical security are locks, guards and alarm systems. Anything that is tangible rather than digital that increases security is considered a physical security measure. To clarify the distinction antivirus programs are not physical security measures.
Some physical security measures are: Locks Keypads Key Cards Educated Personal Random Authentication Generators
A physical security counter measure would be a back up plan. A back up plan is instituted if there is a failure of the main plan.
Physical security measures are things that are done to reduce data theft through physical means. This does not mean, for example, installing a physical firewall (this is logical security, the prevention of data theft over the wire). Physical security means to physically secure the hardware. This may include cages, locked doors and security badges, and even padlocks on workstations to limit the ability to open the cases or remove the case from its physical location.
Physical access restrictions
Yes - challenging people is a form of physical access control, hence it is a physical security measure. The challenged person must demonstrate to the satisfaction of the the guard (or person presenting the challenge) that they are authorized to enter the restricted area where the computer resources are located. They may be required to present a physical token such as a picture ID, biometric input such as a fingerprint, and /or a pass-phrase of the day (or any number of other authenticators).
The evaluation procedure for physical security typically involves assessing the effectiveness of measures such as access controls, surveillance systems, security personnel, and perimeter defenses. This often includes conducting security audits, vulnerability assessments, and penetration testing to identify weaknesses and areas for improvement. The results are then used to develop a security plan that addresses identified vulnerabilities and enhances overall protection.
Length is a physical property. Any measure of size or mass is a physical property.
Height is a physical property, just like color or weight (mass).
By unit of length and distance and conversion ,we can say that physical property length is used to measure in centimeters.