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#11
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Do you have experience with "infrared camera detection" on mobiledevices?
On 1/27/19 12:03 AM, Jeff Liebermann wrote:
On Sat, 26 Jan 2019 15:05:10 -0800, John Robertson wrote: Another detector for a hidden camera lens is the reflective LED method. You wear a headdress of LEDs facing outwards just above your eyes and if you see bright point reflections then you may have found your hidden camera (lens)... This was explored in the book by Cory Doctorow "Little Brother" https://boingboing.net/2008/05/09/ho...ct-hidden.html John :-#)# Nice idea. My initial guess(tm) was that the anti-reflective coating on the camera lens would umm... not reflect anything: It's the retroreflection from the surface of the image sensor that you see, like a cat's eye in the dark. If the sensor is at the focus of the lens, the reflection goes straight back to the light source. Cheers Phil Hobbs -- Dr Philip C D Hobbs Principal Consultant ElectroOptical Innovations LLC / Hobbs ElectroOptics Optics, Electro-optics, Photonics, Analog Electronics Briarcliff Manor NY 10510 http://electrooptical.net http://hobbs-eo.com |
#12
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Do you have experience with "infrared camera detection" on mobile devices?
In article ,
RichA wrote: IR cameras you can put on a smartphone go much deeper into the IR than CCD's or CMOS chips in cameras or phones. no |
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