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 they are class 5 IR blocking glasses that stop CCDs catching my eyes

i probably should not wear them all the time outside haha 
 For welding? 
 for cameras to not capture images of my face that can me automatically recognised 
 Ahh, smart 
 yeah, i've tested it... outside in bright sunshine, a photo of my face all you see when you crank up the brightness is the lenses become mirrors, because they are blocking all light the camera is receiving through from the inside 
 and yes they are welding safety glasses... not as dark as the kind on the masks but very dark.. plenty dark enough to stop CCDs, which are IR sensitive, from registering anything through them