The one-time pad, invented by a telegraph expert in 1882, is an example of an unbreakable cipher. Using the one-time pad is fairly straightforward, but it is not commonly used due to the difficulty of implementation. In this video, learn about the advantages and challenges involved in using one-time pads for security.
- [Instructor] While technology certainly plays … an important role in physical security, … physical security programs also rely upon human guards … to play a role in securing facilities. … People are often responsible … for allowing access to a facility, … using human judgment to evaluate visitor requests … and grant access to authorized visitors. … While many of these procedures … can be assisted with technology, … there's really no good substitute for human judgment. … Having human security guards also helps organizations … present a welcoming face to the public … while protecting the organization's security. … Security personnel may appear … to simply be receptionists to outside visitors, … while in reality, … they're playing a crucial security function. … In environments where the organization wishes to make … a bold statement about physical security, … they may use overt uniformed guards … to project an air of security and authority. … Depending upon local regulations, … these guards may even be armed. …
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