Networked security tags for portable devices

A method for securing data in a portable computing device within a protected region, the method comprising steps of:

• configuring a signal generating system within the protected region, the signal generating system comprising at least one field antenna and a base station operable to generate a low frequency radio signal not exceeding one megahertz;
• configuring the portable computing device with a security tag, the security tag comprising:
• a low frequency transceiver, a microcontroller, an antenna operable at said low frequency, and a security program for secure use within the protected region;
• monitoring the portable computing device within the protected region;
• enabling user access to the data in the portable computing device when the portable computing device is within the protected region;
• and
• restricting user access to the data in the portable computing device when the portable computing device is outside of the protected region.

A system for tracking, monitoring, and securing at least one portable computing device within a protected region, the system comprising:

• a networked security tag affixed to each portable computing device, the security tag operable to receive and transmit low frequency radio signals not exceeding one megahertz;
• a base station operable to generate the low frequency radio signals throughout substantially an entirety of the protected region, the base station comprising logic circuitry, a radio modem circuit, and an antenna;
• and
• at least one field antenna for radiating the low frequency radio signals driven by the base station.