> Probably the reason for the subpar FLIR resolution on this phone as well. Nope. You are confusing proper Far-Infrared thermal cameras (which can "see" radiat

> Probably the reason for the subpar FLIR resolution on this phone as well. Nope. You are confusing proper Far-Infrared thermal cameras (which can "see" radiated heat in the e.g. -10..60c range, and tell you that the top left corner of that window is poorly insulated), and regular CMOS cameras lacking an IR filter, which just see up to a few hundred nanometers beyond far-red (up to 1000 I'd guess?), and some clothes would be transparent at those wavelengths if illuminated by the right source (the Sun being one). You can easily buy filter-less IR cameras for scientific or astronomical purposes, or if you want to perv I guess, they're readily available. Plop ~20 bucks on a Pi NOIR camera for example, for the Raspberry Pi. (Actually every CMOS sensor sees in that band - it's reasonably easy to modify many cameras and remove the IR filter if that's what you want) An actual thermal camera is way more expensive and has a far lower resolution unless you want to spend more than on a Tesla. Not to mention, it's subject to ITAR export controls if you're in the US.