The Sazo GSM is quite simply a miracle of technology. It combines exceptionally small size with low cost and sophisticated safety features.

Although it does not track with the accuracy of the Sazo GPS, it is still possible to locate users up to 50 meters accuracy within a matter of seconds.

The Sazo GSM can even be superior to the Sazo GPS in some circumstances because there is less disruption to the signal when the user is indoors. However, as the device uses GSM network cell location triangulation (Vodafone, O2, Orange, T Mobile) it is likely to be less accurate in rural areas as the cell masts are further from each other.