” Another surveillance option that government agencies have discussed is taking noncontact fingerprints at TSA every time someone flies. “Much of the American public won’t tolerate that,” Dr. Lee says. “They are going to argue that fingerprinting is too much government oversight, and that will result in a lot of pressure and pushback.”

Still, in polls taken over the past decade, Americans recognize the need to secure ports of entry. Machine vision will continue to provide, and improve upon, that service, thanks to CMOS performance, new techniques to mitigate diverse environmental conditions, and the continued automation of analytics.

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