Abstract: A monitoring device and system capable of tracking, monitoring and locating a person allows a parent, guardian or supervisor to set inclusive and exclusive limits, permanently or temporally. The device includes a GPS receiver and a cellphone integrated into a band capable of being locked on a limb of person to be monitored. A child armband may have antitamper devices included in the band that prevents its removal and automatically sends alerts if the band is removed. An alert may be initiated and delivered by the system when the device leaves a temporal inclusion zone or when the device strays into an exclusion zone. The device may have an alarm capable of being activated by an authorized agent at a time when the authorities are within ear shot of the alarm. The antennas may be housed within cavities in the band and the electronics for the GPS receiver and wireless communication device may be contained within tamper resistant housing.