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Nexcopy Introduces Write Protection for SD Cards

write protection for SD cards

Lake Forest, CA — July, 2015 — Nexcopy Inc. introduces a new software suite which supports data locking content to secure digital media. The software function supports both full-size Secure Digital card media and microSD card media. The data locking feature will turn the SD card into a read-only card so data cannot be deleted or formatted off the device.

Write Protection for SD Card: Why It Matters

As data security becomes increasingly critical, write protection for SD cards is a key feature that prevents unauthorized data modification or deletion. Nexcopy’s new software and duplicator hardware empower users to permanently lock content at the controller level—making it impossible to erase, overwrite, or format the card’s data.

Write protecting, or data locking content to flash memory is an important security feature. With the Nexcopy software and duplicator, data can be copied to the memory card and as a final step the device will be write protected at the controller level. Performing the data lock at the controller level blocks any third party from manipulating, hacking or tampering with the original content.

With the Nexcopy duplication software and hardware solution, a content owner has the following benefits:

  • Protect bootable operating systems which run from SD cards
  • Block viruses or malware from being transferred to the memory device
  • Eliminate users from deleting or formatting content off the SD card

“Several of our customers with global data distribution requirements asked for this feature,” says Greg Morris, President of Nexcopy Inc. “The ability to write protect Secure Digital media was the added security measure they required, and we delivered.” Morris continues, “In addition, I am happy to announce current Nexcopy customers with SD Duplicators will also benefit from our updated duplication software.”

With optical drives disappearing from laptops, netbooks, and most tower-styled computers, the requirement to disseminate information via flash memory is becoming more popular now than ever. As content owners make their data available on flash memory, there is an added responsibility to ensure the memory is secure from malware and viruses. One way to prevent suspicious files from “jumping” onto the memory is making the flash memory write protected (or read-only). Using read-only Secure Digital media is a dual benefit because files cannot be added to the card and files cannot be removed from the card.

The software suite is compatible with the PC-based SD200PC duplicator and microSD200PC duplicator by Nexcopy. The two SD duplicator models are twenty target systems and require a Windows host PC to run. The write protection is performed at the controller level. It is not the mechanical switch found on the outside of Secure Digital media. This means the write protection setting done by the Nexcopy duplication software is the most secure method to make SD and microSD media read only.

Nexcopy’s complete line of USB Duplicators, CF Duplicators, SD Duplicators, and microSD Duplicators are available through a worldwide network of authorized resellers.


About

Nexcopy Incorporated specializes in developing and manufacturing the finest and most feature-rich flash memory duplicators in the market. Pioneering the solid-state memory duplication market, Nexcopy supplies Central and South America, Europe, India, Asia, Pacific Rim and serves the U.S. market through its U.S. headquarters at: 13 Orchard Road Suite 102, Lake Forest, CA 92630.

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How To Read and Write CID on SD Cards

How To Read and Write CID on SD Cards, using Nexcopy SD Duplicator Solutions

How To Read and Write CID on SD Cards

If you are looking to read the CID number of an SD card, or extract the CID off an SD card, then you will 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.

UPDATE (Feb 16, 2023):

We learned the company which manufactures this product now offers the ability to write the CID value as well as write protect the Secure Digital media.

Most phones and much of the software on phones will lock into the CID number of an 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 won’t get the number—or at least not 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.

CID Number Table for SD Cards, Learn How To Read and Write CID values

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 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 came 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 read 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 export it 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:

Nexcopy SD Duplicator Software Reading CID Numbers for SD Cards

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.

The CID (Card Identification) number is a unique identifier that is assigned to each Secure Digital (SD) card. The CID number is a 16-byte value that is used by the SD card host device to identify the SD card and to determine its capabilities.

Reading and Writing CID on SD Cards using Nexcopy SD Duplicator Example

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Cellink Swivel USB Stick Is Charger, Reader & UFD

Lets just raddle off the use of the Cellink USB swivel gadget.  Of course you have the shape, look and feel of a typical UFD.  With flash memory for…well you know.  Next, swivel the Cellink and you’ve got a microSD card reader.  Swivel the other direction and you’ve got a direct connected to your USB port and cell phone for some wireless charging.  Of course you’ll block all the other ports in the process, but that’s the cost of cool gadgetry.

cellink swivel usb

If these become readily available it would be a great item to have.  It seems like down-sizing your basket full of gadgets is a continual process.  So here we streamline to a single UFD, forget another reader and the power cord to your cell phone. That’s progress.

cellink

Source:  Aving. Continue Reading

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