A pill bottle cap provides access to authorized users using a biometric authentication feature. The pill bottle cap broadly includes: a shroud； a plurality of clamp members, each movably mounted to the shroud； a drive member interconnected with each of the clamp members to cause the clamp members to move in a first direction when the drive member is actuated in a first direction, and to cause the clamp members to move in a second direction when the drive member is actuated in a second direction； an actuator configured to actuate the drive member to selectively move in each of the first and second directions； and biometric identification module coupled to the actuator, and configured to activate the actuator to cause the selective movement upon identification of an authorized user. Each of the components are configured and positioned to minimize a height and a volume of the pill bottle cap.
