What is a common method for granting temporary access in electronic access control systems?

Issuing a temporary access code is a common method used in electronic access control systems to grant temporary access. This approach allows for the creation of a unique, time-limited code that can be given to individuals for a specific duration and purpose, ensuring that access can be controlled and monitored effectively.

Temporary access codes can be easily generated, and their expiration can be managed by the system, allowing for flexibility and enhanced security. This method is particularly useful in situations where visitors, contractors, or service personnel require short-term access to restricted areas without the need for physical keys or other permanent access methods.

The other options, while they might offer ways to provide access, are often less flexible or secure compared to temporary access codes. For example, providing physical keys that expire can be less efficient, as finding, distributing, and collecting physical keys can introduce logistical challenges. Setting up a guest username is also a method of granting access but may not offer the same level of security and control as temporary access codes do, especially if not managed properly. Using a biometric scan is typically linked to permanent access and security measures, making it less suitable for short-term access needs.