Many an armchair futurist seems absolutely convinced that Google Glass might soon render street crime obsolete. The thinking goes that when everyone is under the watchful eye of a web-connected faceputer, your common street hoodlum will no longer be able to rob with impunity. We’ve been down this road before.
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Today we walk through metal detectors to get into courthouses, airports, and even concert venues. But back in the 1920s the first walk-through metal detectors weren’t invented for finding weapons (or nail clippers), they were invented for searching would-be thieves.
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