Computer sciences, King Faisal University. He holds Ph.D. degree in computer science from Khartoum University, Sudan. His main interested research areas: Mobile agent system architecture, mobile agent security, distributed systems, database Systems and artificial intelligent systems. Tarig is an Oracle Certified professional (OCP) from Oracle company as application developer 6i. Also, he has used.Net technology, C#, Java languages. E-mail: Tarig_Harbi71@hotmail.com Cite this article as follows: Tarig Mohamed Ahmed: "Increasing Mobile Agent Performance by Using Free Areas Mechanism", in Journal of Object Technology, vol. 6, no. 4, May-June 2007, pp. 125-140 http://www.jot.fm/issues/issue_2007_05/article4 Previous article