Professional Camera & Infrared IR Detector - SSS Corp.
Amazon.com : Hidden Camera Detector with Infrared viewfinders, Anti-Peeping & Protect Privacy Security, Super Strong LED Light, Infrared Spy Camera Detector Chargeable Anti Theft Alarm for Hotels, AirBnbs (Black) : Electronics
Your phone camera can see infrared light. Test your Tv Remote to see if your batteries are actually dead! : r/mildlyinteresting
Can your phone camera see infrared light? - Quora
My phone's camera can see the infrared light from my remote. : r/mildlyinteresting