I saw this article on slashdot, but haven't looked into whether these
claims are true yet.

http://apple.slashdot.org/story/11/04/19/2231240/Michigan-Police-Could-Search-Cell-Phones-During-Traffic-Stops

This sounds like our epic thread of years past about having an encrypted
laptop when you cross the border and whether or not law enforcement has
the right to invade your digital privacy without cause.  In this case,
I'm posing the question about what would be the best way to
design/build/hack a phone which would behave as follows:

-all user storage (phone contacts, calendar items, e-mails) are kept in
removable storage like microSD

-microSD chip is mounted via a FUSE like system that uses a strong
crypto, using a strong key (4096bit or so) with a passphrase that the
user knows (and allows for more than the standard 4-digit "unlock
code" size)

-at boot-up, the initialization procedure prompts the user for the strong
key passphrase before allowing access to the user storage

then if you happen to be driving through Michigan and a cop signals their
lights to pull you over, you just hold down the power button on your
phone for 5 seconds, and no matter what crazy device they think can
crack the typical "unlock codes" to read your files, they wouldn't be
able to get past your encryption
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