As one of the maintainers of eCryptfs, and a long time Thinkpad owner, I have been asked many times to add support to eCryptfs for Thinkpad's fingerprint readers.

I actually captured this as a wishlist bug in Launchpad in August 2008, but upon thinking about it a bit more, I later closed the bug "won't fix" in February 2009, and discussed in a blog post, saying:
There may be civil liberties at issue as well. While this piece is satire and Apple says that it is not sharing fingerprints with the government, we've been kept in the dark about such things before. I'll leave you to draw your own conclusions on that one.

But let's just say you're okay with Apple sharing your fingerprints with the NSA, as I've already told you, they're not private at all. You leave them on everything you touch. And let's say you're insistent on using fingerprint (biometric) technology because you can. In that case, your fingerprints might identify you, much as a your email address or username identifies you, perhaps from a list.

I could see some value, perhaps, in a tablet that I share with my wife, where each of us have our own accounts, with independent configurations, apps, and settings. We could each conveniently identify ourselves by our fingerprint. But biometrics cannot, and absolutely must not, be used to authenticate an identity. For authentication, you need a password or passphrase. Something that can be independently chosen, changed, and rotated. I will continue to advocate this within the Ubuntu development community, as I have since 2009.

Once your fingerprint is compromised (and, yes, it almost certainly already is, if you've crossed an international border or registered for a driver's license in most US states), how do you change it? Are you starting to see why this is a really bad idea?

So please, if you have any respect for the privacy your data, or your contacts' information, please don't use fingerprints (or biometrics, in general) for authentication.



kthxbye,

:-Dustin