SanDisk's SD card can store data for 100 years

SanDisk on Wednesday announced a Secure Digital card that can store data for 100 years, but can be written on only once.

The WORM (write once, read many) card is "tamper proof" and data cannot be altered or deleted, SanDisk said in a statement. The card is designed for long-time preservation of crucial data like legal documents, medical files and forensic evidence, SanDisk said.

The media comes with capacity of only 1GB. SanDisk determined the media's 100-year data-retention lifespan based on internal tests conducted at normal room temperatures.

To draw comparisons, the card is like DVD-write only media, but much smaller and with a much longer life span. SD cards typically slot into portable devices like digital cameras and mobile phones to store or move images, video or other data. The WORM works like conventional SD media, but only with compatible devices, SanDisk said.

The company said it is shipping the media in volume to the Japanese police force to archive images as an alternative to film, SanDisk said. The company is working with a number of consumer electronics companies including camera vendors to support the media.

The media is available worldwide through resellers. SanDisk did not comment on pricing.

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