Meet the Siring: a smart ring that allows you to wake up Siri and control your phone. It helps you keep up with your notifications, answer/reject calls, control music, and unlock your phone. The device has a battery life of 30 days. It is IPX-7 waterproof. It essentially replaces the Home button of your phone.
You can use the companion app to customize how you want to see your notifications. The developers are working on an Android version too! You can get Siring on Indiegogo.