The TR-206 is a professional tracking system specially designed for children and elderly uses. It allows users two-way voice communication, emergency rescue locator, and real-time tracking report. The user is able to record/track/geo-tag the device's position on our easy-to-use server. Even when GPS is not fixed indoors or in weak signal areas, users can still obtain the reference position from the AGPS function (cell identifier) on the server. Additionally, the user has the right to freely set up a 'Geo-fence' to monitor and track loved ones when they move away from the safe zone or enter the dangerous zone.