The AngelSense Guardian GPS provides features to those of other Safety devices but is unique because it uses an analytic system based on GPS data. It learns the schedule of the wearer and sends alerts when the wearer does not arrive at a typical location or unexpectedly leaves one. The device features a magnetic fastener and voice monitoring. The magnetic fastener allows the device to be placed in a protective sleeve on the inside of the wearer’s clothes, and it can only be removed with a magnetic key. The device also features auditory monitoring of what is happening around the wearer of the device. This device requires a service plan.