Not sure if it runs on Android, but the iPhone Life360 app allows the whole family to track one another. We use the free version, which is limited to 24 hour breadcrumb tracking, but for instantaneous location it works well. I also run a Garmin head unit with the live tracking feature, which sends a live email link of my ride. Garmin’s newer units also have emergency locator functions (via the Connect app) that will react to certain g-force conditions (like a spill) to send an automated emergency message via text. Of course, all of these work only when you have a Bluetooth connected phone that’s connected to a network.