A synthetic DNA spray aids crime prevention in Rotterdam.

Rotterdam’s police department has deployed a preventive “DNA spray” system that marks criminals with a synthetic, invisible mist. When facing the problem of how to deal with a wave of petty crimes happening to an urban McDonald’s, the police offered the spray as a preventive solution by betting that the unknown powers of the mist would instill an element of fear, whereby the mark of “crime” might be forever imprinted onto the robber’s genetics.

The New York Times reports:

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