Like something this easy , silly or absurd that actually work . I know this is stupid and probably doesn’t exist but just want to confirm in case it do exist so that i don’t miss it . Even if it is not exactly what i described but does come close enough do share.
You can view IR with your back camera too.
Fixed
The back camera on my iPhone 13 can’t. It’s filtered. Front cam works great.
Oh really? My Samsung doesn’t.