Sorry, but there absolutely is. On the machines with ATR, to initiate a scan the clerk must push an option "scan male" or "scan female". This is black and white, not a question of beliefs or interpretations.

This is assuming that your post was "there isn't a need" to mean "it is possible to scan someone without selecting these options using the scanners currently installed". If you meant "the scanners should be able to scan someone without having the option selected (but I am aware that they currently lack this feature for whatever reason)" then ignore this post.