Analyzing Broadcast Patterns and Randomization Techniques in Wi-Fi Probe Request Frames

This paper explores the complex dynamics of Wi-Fi probe request frames, focusing on their transmission behaviors and the implications for user privacy. As mobile devices become increasingly sophisticated, their capacity for wireless communication presents both opportunities for enhanced connectivity and privacy-related challenges. This study examines critical features of probe request frames and their role in device fingerprinting. We highlight the challenges and advancements in communicating between mobile devices and nearby networks by analyzing the randomization policies employed by various operating systems and their effectiveness in masking device identities. Through comprehensive experiments conducted across multiple mobile devices and operating system versions, we capture and analyze probe request frames under different user-device interaction phases. Our findings indicate variations in transmission frequency and the impact of connection states on broadcasting characteristics. We also investigate the deployed randomization policies in different brands of mobile devices, uncovering their influence on privacy preservation. This research provides notable insights for developing more effective wireless communication approaches, contributing to the broader goal of enhancing user privacy in this field.