The AirMobile agent for PDAs runs quietly in the background on PDAs. If the application finds a rogue access point (AP), it analyzes the target and then determines whether the AP poses threats to your systems. This application runs as a client-server application. The client will be installed on a mobile device, and reporting is performed to a server. It has features to ensure that reports are emailed to security personnel. An AirMobile agent version is available for Windows based PCs as well.
Get more info on this tool here.