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Todays garage door opener remotes use rolling code technology. The code changes each time you use your remote. code grabbers are not able to acquire these new codes, only the one that was used. The last code no longer works since the system has already changed the code used.

The earliest remote transmitters were similar to remote bomb detonators used in WWII. They used a single radio frequency to activate the garage door opener. There was no security as anyone with a garage door opener remote could open any garage door equipped with an automatic door opener.

In the 1970's "dip switch" transmitters were developed to provide some security. Remotes came with 8 dip switches to set the transmitter frequency. These 8 switches provided 256 possible code combinations.

This was still not a great deal of security but a much better solution than before.

Unfortunately, few owners took advantage of this security option by changing dip switch settings from the factory default settings. It was still easy for thieves to find operators they could activate with a transmitter set at factory default.

This problem was solved by providing remotes with rolling code technology. Codes change automatically every time the operator is used. Each time a code is transmitted the system automatically creates a new code using an encoder. With billions of code possibilities, the same code is never used twice.

When you buy a remote control for your garage door opener, all the installation and code setting instructions are included.

Your garage door opener owner's manual provides instructions for reprogramming your devices. It also gives the steps to erase all code settings before reprogramming all your remotes in the event an operator is lost or stolen.

The notorious Tom Clancys ghost Recon Advanced Warfighter 2 finally makes its way to PlayStation 3 owners. The game is more than an abysmal port from the xbox 360 (ala FEAR). Tom Clancys ghost Recon Advanced Warfighter 2 on the PlayStation 3 is virtually identical to the xbox 360 version. In Tom Clancys ghost Recon Advanced Warfighter 2, players reprise their role as Scott Mitchell (leader of the Ghosts).

The storyline in the game is regarding Mexico and nuclear weapons. The protagonist (Scott Mitchell) and his squad is sent to Mexico to neutralize the terrorist threat. The gameplay ranges from the much maligned escort mission to the more engrossing eradicating your adversaries mission. All of the tasks from the xbox 360 game like taking cover, and exploiting the Mule drone remains intact in the PlayStation 3 game. The six axis controller gives players the ability to dodge, dive, and execute evasive maneuvers instantaneously.

This is particularly useful when you are trying to shoot, give orders to your teammates, and move simultaneously.The six axis controller was implemented perfectly in Tom Clancys ghost Recon Advanced Warfighter 2. This is definitely a welcome addition to the somewhat cumbersome controller of the xbox 360. There are some more multiplayer maps that are available as well. Graphically, the PlayStation 3 and the xbox 360 adaptations of Tom Clancys ghost Recon Advanced Warfighter 2 are clones. There is no decrease in the frame rate on the PlayStation 3; the game runs at a nice and smooth frame rate throughout the duration of the game. The audio holds up nicely on the PlayStation 3.

radio chatter will make gamers feel like they are in a war zone. Overall, Tom Clancys ghost Recon Advanced Warfighter 2 is merely a mild improvement on the PlayStation 3 than on the xbox 360 due to the controls and multiplayer.