When you registered for GoTrak.me, you will have received an email with a URL which is used for sharing your location updates. If you haven't got your email, contact support and we will resend your details for you.
This is a feature we are working on at the moment. Soon you will be able to login and decide which icon you would like to show!
Before you can use GoTrak.me, you must enter your Access Key in the Settings view. Only when that is configured will the app allow you to access the location sharing feature.