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Spy camera detection using smartphone time-of-flight sensors (dl.acm.org)

812 points by Nirali_Feige · 1767 days ago · 224 comments on HN

Article summary

The article discusses a method for detecting spy cameras using smartphone time-of-flight sensors, proposing a system called LAPD (Laser-Assisted Photography Detection). The system uses the properties of a camera lens to detect the camera itself. The authors have presented this work at a conference and plan to open-source the code. They also intend to release the system as an app, but are currently working on addressing some technical limitations.

Main themes

  • spy camera detection
  • time-of-flight sensors
  • LAPD system
  • security and surveillance
  • acronym confusion
  • app release and development

What commenters say

  • The LAPD acronym is confusing due to its association with the Los Angeles Police Department.
  • The system could be evaded by hiding cameras in hard-to-reach places or using pinhole cameras.
  • Creating false positives could be a way to undermine trust in the detectors.
  • The system's effectiveness could be reduced by using a honeycomb lens filter or a variable shutter.
  • Some people are interested in using the system to scan hotel rooms for hidden cameras.
  • The authors should define their acronym clearly to avoid confusion.
  • The system's release as an app is anticipated, but technical limitations need to be addressed first.
  • The cat-and-mouse nature of security means that the system will likely lead to the development of more sophisticated spy cameras.