It's a day or two late to be passing this on, but here it is anyway:

A government report that urges the U.S. Postal Service to create "smart stamps" to track the identity of people who send mail is eliciting concern from privacy advocates.

The report, released last month by the President's Commission on the U.S. Postal Service, issued numerous recommendations aimed at reforming the debt-laden agency. One recommendation is that the USPS "aggressively pursue" the development of a so-called intelligent mail system.

Though details remain sketchy, an intelligent mail system would involve using barcodes or special stamps, identifying, at a minimum, the sender, the destination and the class of mail. USPS already offers mail-tracking services to corporate customers. The report proposes a broad expansion of the concept to all mail for national security purposes. It also suggests USPS work with the U.S. Department of Homeland Security to develop the system.

If you want to. read the whole thing.