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This paper presents a method to embed arbitrary bit sequences into acceleration data by attacking capacitive accelerometers with sound. Using a loudspeaker, sound data representing bit sequences is irradiated to the device, manipulating the acceleration data instantly and continuously. Evaluation experiments showed that the extraction accuracy of 10-bit binary information is 100% from multifunctional sensors placed on the table, 99.7% from a smartphone placed on the table, 100% from multifunctional sensors worn at the wrist, and 98% from a smartphone held in the hand.

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A Method for Embedding Information Into Acceleration Data Using Resonant Frequency Sound to Capacitive Accelerometers

  • 会议论文

  • 发表日期：

    2025年

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  • Takeru Yokoyama,
  • Kazuya Murao

摘要

This paper presents a method to embed arbitrary bit sequences into acceleration data by attacking capacitive accelerometers with sound. Using a loudspeaker, sound data representing bit sequences is irradiated to the device, manipulating the acceleration data instantly and continuously. Evaluation experiments showed that the extraction accuracy of 10-bit binary information is 100% from multifunctional sensors placed on the table, 99.7% from a smartphone placed on the table, 100% from multifunctional sensors worn at the wrist, and 98% from a smartphone held in the hand.