Meet the Revolar: a smart personal safety device that hides under your clothing and keeps you in touch with your loved ones. Once you have set up your contacts and synced the device, you will be able to get help with the press of a button. The companion app is available for iOS and Android devices.
The Revolar is not a regular tracking device. It only starts tracking you when you press the hidden button. The device is water resistant and lasts for months on a full battery charge. It connects to your smartphone via Bluetooth. You can find more information about it on Kickstarter.