As Grid technology evolves it is becoming evident that the inclusion of mobile devices in a Grid environment will benefit both the Grid and mobile network communities. Many mobile devices, however, have limits on their computational resources that make it difficult to achieve this goal. The goal of this paper is to investigate how well the most limited wireless devices can make use of grid security services. This paper describes a novel security approach on fast mobile grid services based on current mobile web services platform environment using XML signcryption mechanism.