In this paper, the authors propose a secure and efficient product tracking mechanism implemented using wireless sensor nodes. This mechanism aims at tracking goods, and actions performed by each actor of the supply chain, while preserving the actors' privacy. Their solution is based on generating identifiers of the actors and their activities using AND Anti collusion codes. The identifiers are encrypted using homomorphic encryption to ensure security against adversaries, and to be able to compress the collected identifiers. In this work, wireless sensor nodes are not required to perform complex computation, which makes their solution feasible.