Method of tracking postal items for measuring time of transit through a multi-network postal sorting system

摘要

A method for tracking mail in a postal sorting system comprising first, second networks (1, 2) of sorting machines (11, 21) with a first, second unique identification protocol for the items (3), the first, second networks (1, 2) producing first, second dated tracking data (DS) as and when an item (3) is conveyed through the sorting machines (11, 21) associated with a first, second unique item identifier (Id-Tag Post Out, Id-Tag Post In) generated according to the first, second protocol, said dated data (DS) associated with said first, second unique item identifiers (Id-Tag Post Out, Id-Tag Post In) are recovered in a data processing unit (30) for the purposes of measuring a temporal characteristic of the transit of said item (3) through the first, second networks (1, 2) and a correspondence is established between said first and second unique item identifiers (Id-Tag Post Out, Id-Tag Post In) by way of digital images (IM1, IM2) of said item (3).