WritingHacker: audio based eavesdropping of handwriting via mobile devices

@inproceedings{Yu2016WritingHackerAB,
  title={WritingHacker: audio based eavesdropping of handwriting via mobile devices},
  author={Tuo Yu and Haiming Jin and Klara Nahrstedt},
  booktitle={UbiComp},
  year={2016}
}
When filling out privacy-related forms in public places such as hospitals or clinics, people usually are not aware that the sound of their handwriting leaks personal information. In this paper, we explore the possibility of eavesdropping on handwriting via nearby mobile devices based on audio signal processing and machine learning. By presenting a proof-of-concept system, WritingHacker, we show the usage of mobile devices to collect the sound of victims' handwriting, and to extract handwriting… CONTINUE READING
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