Access control for robots works on the same underlying logic as badge-based access control for staff: define zones, define who (or what) can enter each zone, and define the conditions under which that access changes.
How it differs from institutional AMR permissions
Access control is one component of the broader institutional permissions picture — specifically the spatial and temporal dimension (where and when). Institutional AMR permissions is the broader category, which also includes task-level authorization, supervisor approval requirements, and emergency-protocol behavior. Access control answers "can this robot be in this room right now"; institutional permissions answers the fuller set of "can this robot do this task, here, now, under these conditions."
Why it matters in healthcare
Hospitals have zones with materially different risk profiles — a public corridor, a patient room, an isolation unit, a medication storage area — and the rules governing robot movement need to reflect that variation. Static, vendor-configured geofencing doesn't account for a hospital's evolving operational reality: a unit under outbreak precautions, a wing closed for renovation, a temporary restriction during a security event. Robot access control gives the hospital direct, adjustable control over this rather than depending on the manufacturer to reconfigure it.
A useful analogy
This is the robot equivalent of badge tiers for hospital staff — an EVS technician's badge opens different doors than a surgeon's, and both are different from a visitor's temporary pass. Robots need the equivalent tiered, revocable access, defined by the hospital rather than fixed at the factory.