Because of the dangers of theft, vandalism and unauthorised use of your systems, you should consider restricting the number of people who have physical access to the area in which your computers are housed. This requirement should be taken into account when premises are being chosen. See Preparing Premises to Site Computers.
Any access control system is likely to have to handle the following categories of personnel, each of whom will have different access conditions:
- Operators and, sometimes, system users who regularly work within the secure area,
- Engineers and other support staff who require periodic access,
- Others, who require access only rarely.