SanDisk Corporation today introduced the SanDisk® SD™ WORM card, a Write Once Read Many (WORM) digital memory card intended for professional uses such as police investigations, court testimony, electronic voting and other applications where data files must be protected from alteration or deletion.
Analog recording media such as film and audio tape are rapidly becoming obsolete, driving demand for a solution suitable for today’s digital devices. But conventional rewritable memory cards do not meet legal requirements to prevent data tampering.
Digital data written to SanDisk SD WORM cards is effectively locked as soon as it is recorded; there is no physical way to alter or delete individual recorded files. Yet viewing the data is simple, because the cards are readable in any standard SD slot attached to a computer or other SD-compatible device.
SanDisk SD WORM cards also offer 100-year archive life1, when kept under appropriate storage conditions. (link)