A free program for Android, by Castle Information Systems.

Get extra security for yourself and your loved ones with Beacon. This is a location-sharing app that allows users to see the location of their friends or family. To do this, simply add people to your contacts. It is a great way to ease your worries whenever you are away from your family.

You can turn Beacon on and off anytime you want. Turning it off will disable it from sharing your location. For privacy, you will also be notified if someone is viewing your location.

Beacon has end-to-end encryption for all data, so you don’t have to worry about compromising your privacy.