purpose of this GPS tracker app is to record locations of your phone and upload to our server. Once you have registered an account and entered the credentials to the app, the app will be running quietly in the background. There will be no user interaction involved. As location is recorded, it is uploaded to our server. You can view the locations on the map of this web site. You can view the current location as well as past locations.
Therefore, if your kid or your other family members have a compatible phone, you can monitor (or even spy) their locations by installing this GPS tracker app to their phones. This works best if your teenager children have just started to drive. You can either install the app to their phones, or place a dedicated phone in the car. In the latter case, it is more cost efficient to use an older smart phone (see details here). Now your children won't be able to lie about their whereabouts.