CWmike writes "SanDisk has announced a 1GB 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. SanDisk determined the media's 100-year data-retention lifespan based on internal tests conducted at normal room temperatures. The company said it is shipping the media in volume to the Japanese police force to archive images as an alternative to film. The company is working with a number of consumer electronics companies, including camera vendors, to support the media."