Meet Ripple: a wearable personal safety device that keeps you in touch with a group of professionals to get you the help you need when the time comes. You will just have to download the app for iOS or Android, update your profile, and you are set.
Click on the wearable device once to get a call from the team. Once you alert them, they can send your information to send the police right to your location. This product is expected to become available in April.