The mail and delivery would be encrypted, etc. for security purposes - use of the receiver would be by finger-print, eye scan, whatever. Now is the time for a clinical discussion of the costs and benefits which would derive from such a system. I realize that a lot of the political whores in congress and elsewhere would scream because of the labor issues and the unions but it is the only logical system to replace the antiquated, labor intensive and eternally escalating system we have now. For the record, I have given up drugs.
Did you get this idea from an e-mail?