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Detection Techniques

All articles tagged with #detection techniques

technology18 days ago•15 min saved

Spotting Hidden Cameras: Practical Techniques and Their Limits

Hackaday collects practical methods for detecting hidden cameras in rooms, noting that standard RF detectors can miss wired or unusual-camera setups, while optical tricks like shining light (or using a smartphone camera to spot retroreflective lenses), IR scans, and even thermal imaging can reveal cameras—even when they’re off. The BBC case shows how tiny devices can be hidden behind everyday objects, but no single method is foolproof, and readers are invited to propose new approaches.

via Hackaday|

#detection-techniques #hidden-cameras #lens-reflection

science-and-technology2 years ago•4 min saved

Invisibility cloaks no match for new detection technique.

Researchers from the Universitat Politècnica de València and DAS Photonics have developed a new technique to detect invisibility cloaks using diffraction tomography. The technique provides much more information about the layers, including a map of the object's refractive index, making the cloaks more easily detectable. The method could also be extended to detect acoustic invisibility cloaks and has potential applications in electronic warfare, signal intelligence, and biomedical imaging.

via Phys.org|

#detection-techniques #diffraction-tomography #invisibility-cloaks