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SAN JOSE, California – Smartphone thefts are on the rise, and one company has created a controversial way to fight back.

Yellow Jacket created a phone case that doubles as a stun gun. The case delivers 650-kilowatts of electricity to anyone who tries to steal a phone.

The phones cost about $99.

At least one police officer warned that the phones could be more dangerous than someone thinks. The company's website says the case is equipped with a dual safety switch.

Click here for more information on the phone