9.4.4 A visitor log is used to maintain a physical audit trail of visitor activity to the facility as well as computer rooms and data centers where cardholder data is stored or transmitted.
Document the visitor’s name, the firm represented, and the onsite personnel authorizing physical access on the log.
Retain this log for a minimum of three months, unless otherwise restricted by law.
9.4.4.a Verify that a visitor log is in use to record physical access to the facility as well as computer rooms and data centers where cardholder data is stored or transmitted.
9.4.4.b Verify that the log contains:
• The visitor’s name,
• The firm represented, and
• The onsite personnel authorizing physical access.
9.4.4.c Verify that the log is retained for at least three months.
Visitor controls ensure visitors are identifiable as visitors so personnel can monitor their activities, and that their access is restricted to just the duration of their legitimate visit. Ensuring that visitor badges are returned upon expiry or completion of the visit prevents malicious persons from using a previously authorized pass to gain physical access into the building after the visit has ended.
A visitor log documenting minimum information on the visitor is easy and inexpensive to maintain and will assist in identifying physical access to a building or room, and potential access to cardholder data.