Why not create a SD card that doesn't actually delete data (until it gets completely full and there's no other way, of course) but instead encrypts it in such a way that only those who know can retrieve it; sort of like an NSA backdoor, but one you control...
I want to get two PQI Air Cards with WiFi and make a custom firmware to auto-sync the contents. Then there would be a continuous backup to a safe location (e.g. iPod + iFlash) with no additional software needed.
Why not create a SD card that doesn't actually delete data (until it gets completely full and there's no other way, of course) but instead encrypts it in such a way that only those who know can retrieve it; sort of like an NSA backdoor, but one you control...