Can you explain more about this? I've seen a few startups now pitching depth-of-field innovations for biometric use. For example http://www.infinityoptics.com.

Can you explain more about this? I've seen a few startups now pitching depth-of-field innovations for biometric use. For example http://www.infinityoptics.com.sg/who-we-are/ http://www.infinityoptics.com.sg/who-we-are/ Not sure if this is a bit too directly commercial for HN, asking re: optics not the whole solution. Assuming a celllphone-ish sensor in terms of scale and cost (assuming lenses are free) how well can one do in theory? Particularly for iris? How feasible is it to have iris scanners we don't need to shove our faces into?