I'm not sure, but either way it would be best to cover your face with maybe a scarf and a ball cap, it's not too suspicious because there's a lot of emo kids who wear scarfs during the summer as a 'style'.
wincors have their cameras on bottom right. ncr's have a camera right next to the reader behind a grayish window. diebold optevas have 2 cameras as well as some of the old IBM machines. the blue IBM machines sometimes have a camera on top of the screen or on the right of the reader.
a friend of mine got caught years ago cashing out and the evidence pictures with the case we by his words all an-face. so rumors are there's a second camera behind the screen or near the panel. i cannot confirm nor deny those.