Purpose -The purpose of this paper is to describe an approach of using mobile phones with Bluetooth technology to enter/exit restricted area. Design/methodology/approach -Applied Bluetooth technology implemented in mobile phones enables the user to perform the identification and the state of presence while entering/exiting the parking space without stopping the vehicle. For the successful implementation of this method for presence detection and proper identification, it is necessary to determine the values of the Bluetooth signal. Findings -This paper discuses a case study that has been done at entry/exit of parking lots. The obtained experimental results show that mobile phones with the Bluetooth technology can be successfully applied as presence detection sensors, as well as in processes for the identification of the user/object in the move. Practical implications -The paper gives a primer how mobile phones with Bluetooth technology, in addition to their basic purpose, can be used as identification devices to enter/exit restricted area. Originality/value -The users have possibilities to access restricted area using a common device -a mobile phone with Bluetooth technology. Successful implementation of developed access control system is based on determining the proper value of the Bluetooth signal strength field that extends around the control cabinet in which the Bluetooth devices are situated.