1. not wearing or displaying a badge; lacking a badge
2. not identified or authorized by a badge; unmarked

Examples

• The badgeless officer was asked to show credentials at the checkpoint.
• Security found a badgeless individual wandering the restricted area.
• Badgeless workers are not permitted on the factory floor.
• The badgeless vehicle was flagged by the parking attendant.
• He entered the conference as a badgeless guest without proper authorization.