Senator Al Franken (D-MN) has sent a letter to Apple CEO Tim Cook expressing concern over the new Touch ID fingerprint sensor built into the iPhone 5s, which went on sale earlier today. In the letter (PDF), the Senator, Chairman of the Senate Judiciary Subcommittee on Privacy, Technology and the Law, says he is an iPhone owner and is concerned about the use of fingerprints to unlock the device. It's clear to me that Apple has worked hard to secure this technology and implement it responsibly. The iPhone 5S reportedly stores fingerprint data locally "on the chip" and in an encrypted format. It also blocks third-par
