A system for locating a member of a group, wherein each member of the group comprises a portable wireless monitored device equipped with location means, the system comprising: at least a first portable wireless monitored device and a second portable wireless monitored device each equipped with location means, wherein the first and second portable wireless monitored devices (14, 16) are accessible via a wireless network; and a server located on the second portable wireless monitored device, the server being adapted to: create unique identifiers for the first and second portable wireless monitored devices (14, 16); receive location data from the first portable wireless monitored device; establish a location rule for the first portable wireless monitored device, wherein the location rule comprises at least: a proximity threshold relative to a perimeter boundary that defines an area from which the first portable wireless monitored device may not leave, or into which the first portable wireless monitored device may not enter, wherein the perimeter boundary is established as a series of points signaled by the second portable wireless monitored device as the second portable wireless monitored device moves around the area from a first of the series of points back to the first of the series of points; determine whether the first portable wireless monitored device is in violation of the location rule established for the first wireless monitored device; and in the event the first portable wireless monitored device is in violation of the location rule established for the first portable wireless monitored device, report the location of the first portable wireless monitored device to the first portable wireless monitored device. at least a first portable wireless monitored device and a second portable wireless monitored device each equipped with location means, wherein the first and second portable wireless monitored devices (14, 16) are accessible via a wireless network; and a server located on the second portable wireless monitored device, the server being adapted to: create unique identifiers for the first and second portable wireless monitored devices (14, 16); receive location data from the first portable wireless monitored device; establish a location rule for the first portable wireless monitored device, wherein the location rule comprises at least: a proximity threshold relative to a perimeter boundary that defines an area from which the first portable wireless monitored device may not leave, or into which the first portable wireless monitored device may not enter, wherein the perimeter boundary is established as a series of points signaled by the second portable wireless monitored device create unique identifiers for the first and second portable wireless monitored devices (14, 16); receive location data from the first portable wireless monitored device; establish a location rule for the first portable wireless monitored device, wherein the location rule comprises at least: a proximity threshold relative to a perimeter boundary that defines an area from which the first portable wireless monitored device may not leave, or into which the first portable wireless monitored device may not enter, wherein the perimeter boundary is established as a series of points signaled by the second portable wireless monitored device as the second portable wireless monitored device moves around the area from a first of the series of points back to the first of the series of points; determine whether the first portable wireless monitored device is in violation of the location rule established for the first wireless monitored device; and in the event the first portable wireless monitored device is in violation of the location rule established for the first portable wireless monitored device, report the location of the first portable wireless monitored device to the first portable wireless monitored device. series of points back to the first of the series of points; determine whether the first portable wireless monitored device is in violation of the location rule established for the first wireless monitored device; and in the event the first portable wireless monitored device is in violation of the location rule established for the first portable wireless monitored device, report the location of the first portable wireless monitored device to the first portable wireless monitored device.