CSI:DeSpy

Abstract

Recently, the spy cameras spotted in private rental places have raised immense privacy concerns. The existing solutions for detecting them require additional support from synchronous external sensing or stimulus hardware such as on/off LED circuits, which require extra obligations from the user. For example, a user needs to carry a smartphone and laboriously perform preset motions (e.g., jumping, waving, and preplanned walking pattern) for synchronous sensing of acceleration signals. These requirements cause considerable discomfort to the user and limit the practicability of prevalent solutions. To cope with this, we propose CSI:DeSpy, an efficient and painless method by leveraging video bitrate fluctuations of the WiFi camera and the passively obtained Channel States Information (CSI) from user motion. CSI:DeSpy includes a self-adaptive feature that makes it robust to detect motion efficiently in multipath-rich environments. We implemented CSI:DeSpy on the Android platform and assessed its performance in diverse real-life scenarios, namely; (1) its reliability with the intensities of physical activities in diverse multipath-rich environments, (2) its practicability with activities of daily living, (3) its unobtrusiveness with passive sensing, and (4) its robustness to different network loads. CSI:DeSpy attained average detection rates of 96.6%, 96.2%, 98.5%, and 93.6% respectively.

Wireless Spy Camera Spotter System With Real-Time Traffic Similarity Analysis and WiFi Signal Tracing

“…These technological strides have transformed IP cameras, which are commonly employed for surveillance purposes, into more compact, costeffective, and user-friendly devices. Moreover, the adoption of high-resolution capabilities, along with the integration of wireless and internet connectivity, has significantly contributed to their widespread popularity [1].…”

“…IP cameras are digital video cameras strategically positioned in various environments to monitor and record activities [1]- [3]. These cameras can transmit their recorded footage over the internet, enabling remote access.…”

“…Despite their benefits, IP cameras can be easily abused for malicious purposes [1]. Spy cameras are cameras installed with the intention of secretly capturing someone's private moments, such as in bathrooms, changing rooms, or hotel rooms.…”

“…Spy cameras are cameras installed with the intention of secretly capturing someone's private moments, such as in bathrooms, changing rooms, or hotel rooms. This issue, commonly known as "molka" in Korea, has become widespread and even earned its own name 1 . The majority of victims are women, and the captured videos are frequently sold on various pornographic websites.…”

“…Although commercially available hardware equipment for detecting spy cameras exists, it often proves cumbersome and impractical for portability. Furthermore, these devices have the limitation of being able to detect only specific types of streams [1], [4]. There are also proposals to employ channel state information (CSI) analysis methods for detecting spy cameras.…”