Method and system for enhancing traceability in a production line by creating a time-based fingerprint

The present invention relates to a method and a system for linking item parameters of items (102) processed in a production line (100) comprising a plurality of measuring devices (106， 108， 110) configured to measure item parameters. The method comprises retrieving (S102) a time series (302， 304， 306) of time stamps (302a-e， 304a-e， 306a-e) for each measuring device indicative of when an item passed the respective measuring device. Each time stamp is associated with a measured item parameter value. A set of time differences are determined (S104) between consecutive time stamps for each of the time series of time stamps. Each time difference is associated with a time stamp. Correlating (S106) subsets of time differences associated with at least two measuring devices. When the subsets of time differences match， associating (S108) the corresponding time stamps from the matching subsets of time differences with each other. The associated time stamps are stored (S110) in a data storage device.