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How To: Read CID on SD card

How To:  Read CID on SD card

How To Read CID on SD card

If you are looking to read the CID number of an SD card, or extract the CID off an SD card then you’ve find this article very helpful.  Some also call this “reading the PSN off the SD card” or reading the product serial number off the SD card.

Most phones and much of the software on phones will lock in to the CID number of a SD card.  The CID number is a unique card identifier number that is unique to the card itself.  The CID number is valuable because software developers and hardware developers can lock software to the unique number of the device thus eliminating the ability to pass along licensed software.

Reading the CID number from an SD card is not an easy task.  It requires specific access codes to the index table of the memory card, and unless you know how to use the SD chipset of your card reader, chances are you wont get the number…or least the correct and accurate number.

What is the CID number of an SD card?

The CID register is 16 bytes long and contains a unique card identification number. It is programmed during card manufacturing and cannot be changed by SD Card hosts.  The CID number is a compilation of information about the card, such as manufacturer, date manufactured, checksum total, GB size and more.  Below is a table outlining all the items which make up the SD CID number.

So with all this said, how do you read the CID number from an SD card?  As we’ve mentioned it isn’t easy and it’s [more or less] hardware based.  If you do enough searching on the internet you’ll find some home-brew code to read the CID numbers, but that’s only if you have the SD card or microSD card connected via an IDE bus to your host computer.  This isn’t easy for everyone.  There is clear evidence that using a USB to SD card reader will not get you the information you require, or at least accurate and correct information.  Meaning most times the CID number generated is actually the serial number of the card reader itself, not the CID number of a specific SD card.

In addition, what if you are required to read the CID number off SD media in bulk?  A single, one-at-a-time solution is not practical.

In my search to read the CID number from SD media, I cam across Nexcopy – a manufacturer of USB duplicator equipment and other flash memory equipment.  Several models they carry are SD duplicators and microSD duplicators.  With the secure digital duplicators part of their feature set includes reading CID numbers from SD media.  The equipment can ready 20 cards at a time, 40 cards at a time, or 60 cards at a time, depending on the model.  The duplicators will read the CID number and exported to a .csv file for import into other business functions.  This configuration makes it quick and easy to obtain the CID number.  Granted, the equipment is not designed for single use operation, but rather reading the CID of SD media in bulk quantity.  Here is a screenshot of Nexcopy’s software reading 20 CID numbers:

I didn’t contact Nexcopy Incorporated for pricing of the equipment, but doing a quick search for the equipment shows me a price of about $1k for the smallest 20 target system and $3k for the largest, 60 target system.

With all this said, there is still no clear-cut method to read CID numbers off SD cards for the home-user, but maybe this article will at least explain why you haven’t found a good solution as of yet.

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How To: Make a USB Bracelet

Here is a simple way to make a stylish USB bracelet.  The project is very simple and requires no technical skills, but will take some time.  The largest amount of time you will spend is making the bracelet, so be sure to have your home-making skills fired up and ready to go.

Items you will need:

The first step is cutting up the cardboard to make the back-bone of the bracelet. Using tape to secure the lead start of the yarn, start wrapping Continue Reading

DIY: USB Slingshot for Angry Birds

Angry Birds is a great game for the first couple weeks.  New levels, new designs, new challenges.  However, the game gets a little stail for the 30+.  Today, we came across something which might re-kindle the fire for the 30-somethings who got burned out after a couple weeks. How about taking the slingshot in the game and making it real life?  This is exactly what this DIY hacker did. Over at MBed, the DIY tutorial for a USB slingshot gives step by step instructions, source code, design schematics and more for you to successfully remake a USB slingshot. Source:  MBed. Continue Reading

Intro DIY Project For Easy USB Charger

Looking to for a simple DIY project for a school report or class event, this USB charger is it!  Or if you’re just looking to try your hand with some simple electronic wiring to see if you have what it takes. Well, using some off-the-shelf times, a battery and the simple schematics below you can have a great USB charge for just about any USB product. The full tutorial is at Instructables, and I’ve also seen a couple good comments in their thread, like: Continue Reading

DIY: Keychain Made of Dice and USB Drive

These days it’s popular to take just about any house hold item, a USB flash drive, and mill out a space to make a USB mod case.  Today’s post is no exception.  Using just two dice and a mini USB, in four easy steps you can make a USB dice key-chain. Step 1:  Get your items.  Dice, USB, Dremel, blue or epoxy and a file. Step 2:  After some measurements, mill out the hold where the USB will be inserted. Step 3:  Repeat step 2 for the second die as this will be your cap.  You also need to drill a hole on a dice side for the lanyard which will attached to your key-chain Step 4:  Epoxy the USB drive into the base die, and attached the lanyard to the cap die.  Now you’ve got a USB dice key-chain. You might want to take things a step further and Continue Reading

USB OSX Lion Shipping Soon, But Do It Yourself For Less

Apple has made waves in the news with their stellar 2nd Quarter results, increased stock price, new MacBook Air and Mac Mini’s computers, no wonder many are talking about them.  In addition, Apple released another OS update, the OS X Lion.  Lion is available immediately via download off the app store.  Some may not want to download a new 4GB OS update.  For that, Apple will release their Lion on USB. First off, lets get some pricing out of the way.  The download update is retail at $30.  The USB stick is set to be at $70.  Not bad, but seems like their math doesn’t add up.  Granted you get an 8GB stick, but lets take a look…$30 for update + $15 for an 8GB stick, the retail should around $45.  Oh, and the Apple logo, that’s another $25.  Okay, now my math is correct.  I apologize. However, if you have an extra 4GB or 8GB stick you can create your own USB OS X Lion stick.  The USB tutorial isn’t that long and only involves three steps.  For the tutorial, I’m going to redirect you to Continue Reading

USB Cryptex – Old Idea – New Hack

Who didn’t love the movie thriller “The Da Vinci Code?”  Not only that, who didn’t dream about having a cool Cryptex gadget to store all your valuable secrets?  Come one, you know it would be phenomenally great to have such a device.  Well, it might not be that far off. A Russian engineer has posted his version of a USB Cryptex case which includes detailed drawings, CAD files and component assembly. You can’t help but to want one. [more photo’s after the break] Continue Reading

DIY: Wallet With USB Pocket

Not everyone keeps their flash drive on a key-chain or in their pocket.  For many, using a ultra slim USB flashdrive and sticking it into your wallet is your form of portability.  For those who do this, read on for a good DIY to insure the stick doesn’t get lost. First off, if you are using something like the Kingmax Super Stick, the drive is so small you’re more likely to lose it pulling keys out of your pocket then forgetting in the computer USB port.  For this reason, the USB wallet is a DIY project to stitch the drive into your wallet. You’ll need:
  • wallet
  • tiny USB flash drive
  • piece of Velcro
  • thread, needle and a thimble
In addition, this method of storing your drive will provide extra protection from the slim stick getting damaged. In short, you’re going to use the lanyard loop of the stick and some thread to stitch it a piece of Velcro which is then put into the wallet.  This design allows the drive to be some-what permanent, yet you can pull it out completely when needed. Continue Reading

USB Tutorial: USB Spinner or Jog Wheel

Sifting through the Instructables website I came along this retro looking USB spinner wheel or Jog wheel. The USB tutorial project is a bit complicated and requires some technical know-how, so if you are looking to increase your mod skill sets, this might be the project for you. So what is something like this good for anyway?  The jog wheel functions like your wheel on that mouse you have, but larger and has good momentum which is nice when searching through large bits of code, viewing long webpages or searching through numerous documents. A job wheel is also excellent for media editing like sound or video.  You can scroll around in these large files effortlessly and without stressing out your finger from the mouse scroll wheel.  With the heaviness of the VCR head you can get the motion going and it’s inertia will keep it spinning for quite some time and when you’ve found the frame you’re looking for, just hold the wheel to stop it. Enough about the sales pitch of a DIY project, jump over to Continue Reading

How To: Make Your Own USB Keylogger

USB keyloggers are always a good idea to have around. Sure you could make the argument that it’s incroaching on someone’s space, or that it’s flat out illegal to track someone without them knowing…but forget all that.  To many ups sides. What about keeping check with your kids?  Or making sure employees are keeping honest?  What about some backup or recovery and you need to know where you’ve been? Well in any case, for the DIY folks, here is a nice tutorial on taking a standard PS/2 and converting it into a USB keylogger.  What I like about it is the simple fact the average computer user wouldn’t notice.  We all see the PS/2 on the back panel, so why investigate it to see if there’s mod to it? The full tutorial can be found at Instructables.  Only tip is that you need some good soldering skills.  Other then that, not a hard task at all. Continue Reading

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