Here is a smart ring with a panic button that lets you get in touch with loved ones and emergency services when in trouble. Nimb is an elegant ring that pairs with your phone to send your location and profile info to others. You are in control of who receives your messages.
Just wear the ring and hold the button for 3 seconds when you need help. Nimb tracks your location in real-time. It is compatible with iOS and Android devices. The ring is water and dust resistant. More information is available on Kickstarter.