This jitter, combined with the shape of our hands and fingers, makes for a highly unique biometric identifier.

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Passengers vetted via background checks would have a biometric identifier, such as their fingerprint or iris pattern, in their passport or other travel document.

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You see, each person's body provides a different amount of opposition to electrical current, so bioimpedance can be a unique biometric identifier.

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The existence of a universal biometric identifier in one field might create irresistible temptations to pull together separate collections of personal information.

ECONOMIST: The measure of man | The