Information-Based Indicia

Information-Based Indicia (IBI) refers to a secure postage evidencing standard used by the United States Postal Service (USPS) to indicate electronic postage payment.[1]

Information-Based Indicia is a 2-dimensional PDF417 or data matrix barcode combined with human-readable information. The barcode data contains such information as amount of postage, origin zip code, destination, mail class, weight, confirmation/tracking numbers, and a cryptographic signature. The human-readable information shows at a minimum the information required by the USPS Domestic Mail Manual (DMM).[1]


  1. 1 2 Performance Criteria for Information-Based Indicia and Security Architecture for Open IBI Postage Evidencing Systems (Report) (2nd ed.). United States Postal Service. February 23, 2000.
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