Well... I'm mainly thinking of newspapers here, something that would allow a fresh download onto a storage card every day.
Actually, given the small storage capacity needed for newspapers or e-books, I'm not sure an SD card is the appropriate storage medium. Maybe it should be something more like a credit card sized card, with about 5-10MB of memory on a data chip or strip, and capable of being scanned or input into a slot. A CC-storage device will be easier to handle, and to brand, and won't seem wasteful compared to SD cards holding a few MB of files.
For a daily newspaper, I think that would be more ideal than an SD card. But that's probably opening up a whole new can of worms...
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