Which security technology is used to limit the number of users allowed to use a scanner attached to the network?

A) Geotracking
B) ACL
C) scanner allocation services
D) Safe Mode

Access Control Lists (ACLs) can be configured to limit the number of users allowed to use a particular resource, such as a scanner attached to the network. This helps ensure that only authorized users have access to the resource and prevents unauthorized users from overloading it or potentially causing damage. Geotracking and Safe Mode are not relevant to limiting scanner usage, and there is no such thing as "scanner allocation services" as a specific security technology.