Abstract : Automatic identification systems represent a wide classification of devices used primarily in commercial settings for inventory/logistics control. Familiar examples of such devices are bar codes, magnetic strips, smart cards, RFID (Radio-frequency identification) and biometric and voice recognition. Security is especially lax in low powered radio frequency systems communicating through an unsecured radio wave channel. Security represents a critical component for enabling the large scale adoption of automatic identification systems. Providing an effective security solution for low powered systems is a major area of concern; it directs research towards 'power consumption aware' computations in security solutions. This paper proposes a lightweight inter-zonal authentication Protocol for moving objects in low powered radio frequency systems. Formal validation and a thorough analysis of the protocol in SPAN security tool reveal its effectiveness and resiliency to attacks - eavesdropping, reader and tag impersonation, replay and desynchronization. © 2019 - IOS Press and the authors.