How to read a CID on an SD card

Written by jacob stover
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How to read a CID on an SD card
(Jupiterimages/Brand X Pictures/Getty Images)

SD cards are used to provide expandable storage to a huge range of devices form cell phones and cameras, to gaming systems and laptop computers. Every SD card that is made must have a CID in order to interface with another device. THE CID is a special identifying code that is unique to each card, working in the same fashion as a serial number. THE CID is not usually displayed anywhere on the device, and few manufacturers provide a way of retrieving this information. With the help of a free, open source application, you'll be able to read The Cid of any SD card in less than five minutes.

Skill level:

Things you need

  • SD Card
  • ReadCID software
  • Computer with an SD card slot

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  1. 1

    Navigate to the ReadCID download page (see Resources).

  2. 2

    Download the ReadCID software, and install it to your local hard drive.

  3. 3

    Insert the SD card you wish to use into your computer's SD card slot.

  4. 4

    Run the ReadCID software. Click on the drop-down menu at the top of the program window to select your SD card from the list of available drives. The software should load for a few seconds then provide the SD card's CID in the "Product Serial Number" field.

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