The paper entitled ?A mechatronics security system for the construction site ? by M. Abderrahim, E. Garcia, R. Diez, C. Balaguer has been published in Automation in Construction journal (Elsevier B.V.) in volume 14, number 4 (August 2005), pages 460-466 (http://www.sciencedirect.com/science/journal/09265805).