Pocket-sized device offers a non-lethal way to disable potential threats.

The Sonic Nausea is a non-lethal, but dangerous piece of self defense technology. Using high-frequency sounds, the device can induce a host of very unpleasant feelings from dizziness to vomiting. Larger versions this type of machine have been used for crowd control, and in military applications.

Sonic Nausea

[via Technabob]

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