If you need to get up to speed on automatic identification (auto ID), go to MIT. Or more precisely, visit the revamped Web site for the Auto ID Center, which is based at the school. Among the features of the new Web site, which is found at www.autoidcenter.org, is a link called "About the Technology." Go to the site, and one of the choices is an Idiot's Guide, which provides a straightforward, non-technical look at the technology and its applications. Want more? There's also a link called Indepth Look, which provides, well, just that.