Offender presence 
warning system comprises of;a GPS tracking device having a tamper detection strap used for attaching the device to an offender limb, containing a 
GPS receiver to receive GPS coordination signals from orbiting satellites and a cellular or 
satellite modem to establish communication with a monitoring 
station, a processor and an RF 
transceiver designed to transmit at time interval uniquely coded RF 
signal. And a victim carry on RF 
transceiver device which is designed to receive offender tracking device transmitted signals when the offender is located within near proximity of a victim, the victim carry on device processor in response to received RF transmitted signals from offender GPS tracking device, the victim warning device processor generates an audio / visual and or vibrating warning 
alarm signal(s) to alert the victim the presence of an offender near by, and the victim warning device automatically transmits a uniquely coded RF 
signal to the offender tracking device, which upon 
receipt of the 
signal generates audio and or vibrating 
alarm signal to warn the offender being to close to the victim and allow offender to move away from the victim, If the offender becomes non responsive to received warning signal(s), at a pre-determine time the offender GPS tracking device transmits a violation signal to a monitoring 
station containing information to both the offender unit ID, and to the victim unit ID along with GPS location information of offender.