Prior to describing what a CAC Card Reader is, I should initially describe what a CAC is. CAC stands for Common Access Card. It is a type of ID distributed through the United States Department of Defense to specific people who require it. The people who get these cards include:

- Active Military Personnel

- Reserve Soldiers

- National Guard Members

- Department of Defense Employees

- DOD Contractors

This is just a short list of the people who may be eligible to get one of these cards. The ID is considered official in terms of the Geneva Convention. The card is also used to access facilities utilized by the military. It's also used to access high-security web pages within the DOD network. Computer access is additionally sometimes controlled with Common Access Cards. This identification card also contains data on an internal memory chip. This information is occasionally needed remotely, therefore the requirement for a CAC Card Reader.

A CAC Card reader is a computer peripheral (a computer accessory) which is able to decode the information on the Common Access Card and allow it to be utilized by the computer's user. This is utilized quite often when a person has been sent overseas where they might not have the chance to sign onto a Department of Defense protected computer.

Generally, these CAC Card Readers are bought on base PX, but are able to be purchased at a Best Buy or similar establishment. You may have to ask for them and potentially show Identification, preferably the Common Access Card to prove you require one. They are also available on the internet. The government doesn't reimburse purchases of these readers in any case.

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