Luminescent Indicia Detector (LID)

Luminescent Indicia Detector (LID) - A device on the facer-canceler that detects luminescent material in the ink on postage stamps and meter stamps. This allows automated facing and canceling of mail. (Also see hot stamp.)

[Category=Postal ]

Source: USPS, 29 September 2009 11:30:22, http://www.usps.com/cpim/ftp/pubs/pub32/pub32h_p.html

Luminescent Indicia Detector - A device on the Advanced Facer Canceler System with Optical Character Reader that detects luminescent material in the ink on postage stamps and meter stamps to orient the mail in the same position and cancel the postage. LID is used only for stamp authentication on the Advanced Facer Canceler System 200.

[Category=Postal ]

Source: USPS, 25 June 2013 09:17:51, about.usps.com/publications/pub32/pub32_terms.htm