4 ms·

Another option is to get a camera lens detector device. It works by detecting the curvature of camera lens.

• icebraining 8y ago
  How does it detect the curvature?
  • nzjrs 8y ago
    I think it probably measures the curvature and if the curvature exceeds the normal parameters of non-lens objects then the device has curvature and can be detected.
    • tk75x 8y ago
      >> How does it measure the curvature > ... it probalby measure the curvature So how does it measure the curvature?
      • nzjrs 8y ago
        You just pop it on your wrist. Edit: I wonder if anyone will get the reference