Method and apparatus for disarming a security system

1. A method, performed by a central security controller, for automatically disarming a security system associated with a home or a business, comprising:

receiving a command to disarm the security system;

evaluating a source address of the command;

comparing 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 of the home or business;

determining that the command originated from a personal communication device proximate to the home or business when at least the portion of the source address of the command matches at least the portion of the local network address assigned to the central security controller; and

disarming the security system when the command originated from the personal communication device proximate to the home or the business.

2. The method of claim 1 , wherein comparing at least a portion of the source address of the command comprises:

applying a mask to the source address;

wherein the portion of the source address comprises the result of applying the mask.

3. The method of claim 1 , further comprising:

receiving an indication that an entry door has been opened;

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

prior to expiration of a predetermined time as measured by the countdown timer, receiving the disarm command;

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

providing an indication that the security system has been disarmed.

4. The method of claim 1 , further comprising:

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

disarming the security system only when the disarm command is received from the 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.

5. The method of claim 4 , wherein determining whether the personal communication device that sent the disarm command is authorized to disarm the security system comprises:

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

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

6. A method, performed by a central security controller, for automatically disarming a security system associated with a home or a business, comprising:

receiving a first MAC address from a local area network of a personal communication device that has received a local network address from a router in the local area network; storing the first MAC address in a memory;

receiving a command to disarm the security system, the command comprising a second MAC address;

comparing the second MAC address to the first MAC address stored in the memory;

determining that the command originated from the personal communication device and that the personal communication device is proximate to the home or the business when the second MAC address matches the first MAC address; and

disarming the security system when the command originated from the personal communication device and that the personal communication device is proximate to the home or the business.

7. The method of claim 6 , further comprising:

receiving an indication that an entry door has been opened;

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

prior to the countdown timer expiring, receiving the disarm command;

when the disarm command originated from the personal communication device and that the personal communication device is proximate to the home or the business, cancelling the countdown timer and disarming the security system; and

providing an indication that the security system has been disarmed.

8. The method of claim 6 , further comprising:

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

disarming the security system only when the disarm command is received from the 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.

9. The method of claim 8 , wherein the disarm command comprises identification information of the personal communication device, and determining whether the personal communication device that sent the disarm command is authorized to disarm the security system comprises:

receiving identification information from any personal communication device during a previous registration process by any personal communication device with the central security controller;

storing the identification information in a memory of the central security controller; and determining that the personal communication device that sent the disarm command is authorized to disarm the security system when the identification information in the disarm command matches the identification information stored in the memory.

10. The method as recited in claim 1 , wherein the source address of the command comprises a MAC address.