Tracking hide and leather in a supply chain process

A process for marking leather manufactured from hide with an XRF-identifiable marker, the process comprising treating a hide or a processed leather with a formulation comprising at least one XRF-identifiable marker to embed said marker in the hide or processed leather, to thereby obtain a marked hide or marked leather, wherein the XRF-identifiable marker is not a native material to a hide or leather or involved in a process for its manufacturing.

A process for identifying a production and/or commercial history of a leather or a product made therefrom, the leather or product having been marked with at least one XRF-identifiable marker, the process comprising directing an X-ray or Gamma-ray radiation towards the leather or product made therefrom and detecting a response X-ray signal emitted from the marker in response, such that said response signal is indicative of presence, concentration or relative concentration of the marker to thereby provide information encoded by the marker on the production or commercial history of the leather or product made therefrom.

The process according to 50, wherein the two or more marking sessions are carried out at different stages of the leather production process.