Abstract
E-Ticket validation problem has relevance in mobile computing environment because of the multiple submission of a ticket that is possible due to intermittent disconnections and mobility of hosts. Here, we propose protocols that are not only sensitive to disconnection but also to location. One of the proposed protocol is variant of the distributed protocol proposed in [7] for internet users. This shows a distributed protocol for static network can be restructured for distributed computation in mobile computing environment. We have also proposed another protocol that uses hierarchical location database of mobile hosts [9].