Mission Nearly Impossible (StrategyPage)
The use of biometrics does its job very well keeping out spies, terrorists and saboteurs. The downside is that it also limits the activities of your own spies. This has led to efforts by espionage agencies to get around this “problem.” The espionage organizations will not comment on what, if any, solutions they have come up with. That is to be expected.
Meanwhile, the U.S. has developed tools that enable combat troops to use biometrics on the battlefield.
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See also: U.S. Military Departs Iraq, Takes Huge Biometric Database with It