The ever-intriguing Jon Udell has just posted an explanation
of how the use of a cryptographic database technique called translucency could address concerns about personal privacy. I reviewed Wayner's book
on translucent databases for Doctor Dobb's Journal
back in 2003; as Udell says, the techniques are "...as yet poorly understood and rarely applied, [but] the principle of translucent data management can help us defuse the ticking time bombs that many Internet services are becoming."