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ST. LOUIS - Former Saint Louis University volleyball player Megan Boken was shot to death in the Central West End in August of 2012. Police say she was targeted because she was talking on her cell phone.

After her death Boken's sister pushed for a "kill switch" that allows users to remotely shut down their devices, deterring thieves from stealing their phones.

On Friday, Google and Microsoft announced they are on board, joining Apple and Samsung. That means kill switches will soon be available for 97 percent of the smart phone market.

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