Want to simply wave your hand as you walk in?
One of the most different approaches being shown at ISC West is a company that claims to deliver "FBI Quality Fingerprints" while eliminating the need to touch anything or even stop.
In order to capture images of user's fingers, they position their hands with the palm facing the reader. The composite below shows the typical read process in three steps:
The notch in the front plate of the reader stand positions hands, working as a partial shield against interfering glare or backlighting of subject hands. An LED ring surrounding the notch glows green/red to verify accepted or denied reads.