10 Gadgets and Apps to Keep Your Kids Safe
Vigilant PPS22BL 130dB Personal Alarm ($14.99)
Think of it as a car alarm for your teen. At first glance, the Vigilant PPS22BL looks like a simple keychain, but this device emits a 130dB ear-piercing alarm, which your child can use to scare off an attacker and alert passersby that she needs help. WIth its embedded strobe light, the PPS22BL can also help her find her way in the dark.