Such tools might have saved Sarah Rosio, a 24-year-old Wisconsin woman who was strangled to death by her boyfriend after having been abused many times before her death.

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"Interest in the situation exploded, " said Marc Klaas, whose 12-year-old daughter, Polly, was kidnapped and strangled to death in a 1993 case that also received intense news coverage.

CNN: Missing child case 'awakened America'

The judge said Gaby's death was probably caused by her being strangled with an electric cable.

BBC: Carmen Gabriela Miron-Buchacra