Method and apparatus for disarming a security system

1. A method for automatically disarming a security system associated with a person's home or business, comprising:

determining, by a personal communication device, when a person is in proximity to the person's home or business; and

in direct response to determining that the person is in proximity to the person's home or business, transmitting a disarm command by the personal communication device to a security controller for the security controller to disarm the security system.

2. The method of claim 1 , wherein determining when a person is in proximity to the person's home or business comprises determining that the personal communication device is within range of a local area network associated with the home or business.

3. The method of claim 2 , wherein transmitting the disarm command comprises transmitting the disarm command over the local area network.

4. The method of claim 3 , further comprising:

receiving an indication, on the personal communication device, that the security system has been disarmed after transmitting the disarm command.

5. The method of claim 1 , further comprising:

in direct response to determining that the person is in proximity to the person's home or business, transmitting identification information identifying the personal communication device to the security controller, where the identification information is used by the security controller to authorize the disarm command.

6. The method of claim 1 , wherein determining when the person is in proximity to the person's home or business comprises:

receiving a code from a device associated with the security system;

comparing the received code to a code stored in memory; and

determining that the person is in proximity to the home or business when the received code matches the code stored in memory.

7. A central security controller for automatically disarming a security system associated with a home or a business, comprising:

a network interface for sending messages and receiving commands over a local area network associated with the home or the business;

a memory for storing processor-executable instructions; and

a processor, coupled to the network interface and the memory, for executing the processor-executable instructions that cause the central security controller to:

receive, by the network interface, a command to disarm the security system;

determine, by the processor, whether the command originated from a personal communication device proximate the home or business; and

disarm the security system when the command originated from the device proximate to the home or the business;

wherein the instructions that cause the central security controller to determine that the command originated from a device proximate to the home or the business comprises instructions that cause the central security controller to:

evaluate, by the processor, a source address of the command;

compare, by the processor, at least a portion of the source address of the command to at least a portion of a local network address assigned to the central security controller by a wireless router that forms part of a local area network; and

determine that the command originated from a device proximate to the home or business when at least a portion of the source address of the command matches at least a portion of the local network address assigned to the central security controller.

8. The central security controller of claim 7 , wherein the instructions that cause the central security controller to compare at least a portion of a source address of the command to at least a portion of the local network address assigned to the central security controller comprises instructions that cause the central security controller to:

apply a mask to the source address;

wherein the portion of the source address comprises the result of the masking application.

9. The central security controller of claim 7 , wherein the processor-executable instructions further comprise instructions that cause the central security controller to:

receive an indication that an entry door has been opened;

in response to receiving the indication, initiate a countdown timer;

prior to expiration of the time, receive the disarm command;

when the disarm command was determined to have been provided by the personal communication device proximate to the central security controller, cancel the countdown timer; and

provide an indication that the security system has been disarmed.

10. The central security controller of claim 7 , wherein the processor-executable instructions further comprise instructions that cause the central security controller to:

determine whether the personal communication device that sent the disarm command is authorized to disarm the security system; and

disarm the security system only when the disarm command is received from a personal communication device proximate to the home or the business and when the personal communication device that sent the disarm command is authorized to disarm the security system.

11. The central security controller of claim 10 , wherein the instructions that cause the central security controller to determine whether the personal communication device that sent the disarm command is authorized to disarm the security system comprises instructions that cause the central security controller to:

receive identification information from the personal communication device during a registration process with the personal communication device; and

storing the identification information in the memory for later comparisons to identification information associated with received disarm commands.

12. A central security controller for automatically disarming a security system associated with a home or a business, comprising:

a network interface for sending messages and receiving commands over a local area network associated with the home or the business;

a memory for storing processor-executable instructions; and

a processor, coupled to the network interface and the memory, for executing the processor-executable instructions that cause the central security controller to:

receive, by the network interface, a command to disarm the security system;

determine, by the processor, whether the command originated from a personal communication device proximate the home or business; and

disarm the security system when the command originated from a device proximate to the home or the business;

wherein the instructions that cause the central security controller to determine that the command originated from a device proximate to the home or the business comprises instructions that causes the central security controller to:

receive a MAC address, from the local area network, of any device that has received a local network address from a router in the local area network;

store the received MAC address in the memory;

compare a MAC address associated with the command to any of the received MAC address stored in the memory; and

determine that the command originated from the device proximate to the home or the business when the MAC address associated with the command matches the MAC address stored in memory of a device that previously received a local network address from the router.

13. A personal communication device for automatically disarming a security system that monitors a home or a business, comprising:

a transceiver for transmitting information to a wireless router in a local area network associated with the home or business;

a memory for storing processor-executable instructions; and

a processor, coupled to the transceiver and the memory, for executing the processor-executable instructions that causes the personal communication device to:

determine that the personal communication device is proximate to the home or business; and

in direct response to determining that the personal communication device is proximate to the home or business, transmit a disarm command to the wireless router, the disarm command for disarming the security system by a central security controller in communication with the wireless router.

14. The personal communication device of claim 13 , wherein the instructions that cause the personal communication device to determine that the personal communication device is proximate to the home or business comprises instructions that causes the personal communication device to:

determine an identification code of the local area network when the local area network is within range of the transceiver;

store the identification code in the memory during an initialization process;

at a later time, determine that the local area network is within range of the personal communication device; and

transmit the disarm command when the personal communication device is within range of the local area network.

15. The personal communication device of claim 14 , wherein the processor-executable instructions further comprise instructions that cause the personal communication device to:

transmit identification information in association with the disarm command for use by the central security controller to determine whether the personal communication device is authorized to disarm the security system.

16. The personal communication device of claim 13 , wherein the processor-executable instructions further comprise instructions that cause the personal communication device to:

transmit an identification code of the personal communication device to the wireless router during a registration process with the central security controller;

transmit the identification code in association with the disarm command;

wherein the security system is disarmed when the central security determines that the disarm command was sent by the personal communication device in proximity to the home or business and when the identification code received by the central security controller in association with the disarm command matches the identification code provided to the central security controller during the registration process.

17. The personal communication device of claim 13 , wherein the processor-executable instructions further comprise instructions that cause the personal communication device to:

receive an indication from the central security controller when the security system has been disarmed as a result of transmitting the disarm command; and

display the indication to a user of the personal communication device.

18. The personal communication device of claim 13 , wherein the instructions that cause the personal communication device to determine that the personal communication device is proximate to the home or business comprises instructions that causes the personal communication device to:

receive a code from a device associated with the security system when the personal communication device is in proximity to the device; and

transmit the code in association with the disarm command, the code for use by the central security controller to determine whether the personal communication device is proximate to the home or business.