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Write-Once-Read -Many
(WORM) SD and Micro SD Card

The Cost-Effective, Tamper-Proof Solution That Secures Your Data

Lack of data security can easily demolish the sensitive files, destroy the authenticity of crucial information, incur a loss in revenue, or can put a life in danger. Installing a dense security system in a device can be a hurdle and sometimes close to impossible because of the compatibility of the device. You can spend a lot of money every year only to retrieve lost or damaged files. Due to technological advancement, the SD / MicroSD cards to perform as a long-term data archive now. It also can be beneficial for its portability and cheap costs.

Flexxon introduces tamper-proof flash storage Write-Once-Read-Many (WORM) SD/MicroSD card. It eliminates the risk of having sensitive files deleted, modified, or overwritten while still granting read-only access to those who need it most.

Designed to meet even the most stringent compliance requirements, Flexxon WORM SD/MicroSD cards offer only the highest level of security to provide the highest level of integrity and enhance the security of critical data and information.

WORM is specifically built for the applications where data reliability and safety are paramount, Flexxon WORM SD/MicroSD cards allow data to be permanently saved and unaltered. It enables access to write data once and read as many as required. They also provide the benefit of time and date authentication which facilitates quick search, retrieval of archived files and provide extra security protection for stored data.

Once the data is saved into the write-once-read-many (WORM ) card, the information will be rendered completely unalterable, non-rewritable, and non-erasable regardless of any accidental or intentional commands from the host, providing a tamper-proof form of media product storage that’s secure, compatible, and cost-effective.

Corporate environments, law enforcement agencies, and numerous government entities are already utilizing WORM cards to protect their secure content as Flexxon WORM SD/MicroSD cards provide an ideal solution for professional content distribution such as financial recordings, police investigations, court testimony, electronic voting and other applications where data files must be protected from alteration or deletion.

WORM SD Card Features


WORM SD Card Unalterable data storage feature

Unalterable data storage

The moment any illegal action is attempted on the existing card data, the WORM card will instantly transform into a write-protect mode to ensure data security and integrity.

WORM SD Card Default WORM card mode feature

Default WORM card mode

Unlike other solutions of the market that require a specific software trigger to enable WORM card function, Flexxon WORM cards are set to WORM card mode by default.

write once read many replace media

Replaces Old Media

WORM replaces CD/DVD ROM as those are slowly becoming obsolete in upgraded computers.

Other WORM SD CARD Features

write once read many drive power loss protection

Power loss protection

Secure your data against unexpected power shutdowns.

write once read many usb drive disturbance management

Read disturbance management

Avoid read-disturb errors, that cause data loss and enhance reliability.

usb flash drive write once read many auto read refresh management

Auto read refresh management

Good for read intensive applications that reduces the chances of uncorrectable errors, resulting from repeated read attempts.

write once read many disk smart function

Sequential Writing

Facilitates sequential writing for the brokers to store multiple files and make it irreversible.


Flexxon WORM SD/MicroSD cards are designed to detect illegal behaviors performed by users and spring into counteractive action. If illegal behavior is detected, the Flexxon WORM card will switch to write-protected mode to secure the data to ensure its integrity.

Once the write-protect mode is enabled, the device must be restarted or the card must be ejected and re-inserted to write on the card again.

write once read many sd card design


Commercial Industrial
Interface SD 6.1
Speed Class Class 10
Flash Type MLC
Capacity 4GB ~ 32GB
Max. Performance Read: 72MB/s
Write: 15MB/s
Temperature Grade Commercial
-25˚C to 85˚C
-25˚C to 85˚C
-40˚C to 85˚C
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write once read many flash at Bank and Financial Industries

Bank and Financial Industries

Protect sensitive financial industry, regulatory authority, and exchange commission records.

write once read many memory for Surveillance Camera

Surveillance Camera

Record surveillance, dashcam, event footage from security cameras.

write once read many sd card for Police Photography

Police Photography

Archive genuine and tamper-free police photography and audio recordings “black box” flight-data recorders.

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Electronic Voting

Ensure electronic voting records are recorded and made

write once sd card for Court Proceedings

Court Proceedings

Secure legal files for trials and depositions

write once micro sd card for Cash Register Data Logging

Cash Register Data Logging

Record financial data from cash registers for tax collection purposes

worm sd card for Medical Industry

Medical Industry

Track patient interactions with physicians and other health-care professionals. Also, retain confidential patient treatment data from medical devices such as AED Trainer, DICOM, and Medical Imaging systems.

write once read many sd card for Non-profit organisation

Non-profit organisation

Stores the financial transactions periodically for legal purposes.

write once read many for University


Keep confidential records digitally for their students to prevent any cases of physical records being destroyed or tampered.

write once read many storage for Businesses


Keep unalterable records so that employees cannot change their data to commit any fraud.

write once read many storage for Casino

Casino Management System

Ensure processing and recording of day to day casino operations and transactions are accurate without fraud or financial irregularities.