Hi everyone,
I thought that Android devices might make a nice display for marquee or other artwork, so I whipped up these apps.
It includes two parts - the Android app and the command line app, either an exe or perl script. The Android app runs on the android device and listens for incoming requests. You store your images on the android device, and run the command line app to send the command of the requested image(s) to display. It can display only one image, run a slideshow (i.e. marquee, flyer, cabinet, etc..) or display multiple, but only change on touch of the screen. Communication is done over the network, so you'll need a network connection if you will run it in a cab..
Here's the result:

The command line app can be used for instance in the pre and post emulator commandlines for Mamewah. A default image can be displayed at start, or once your emulator is closed.
If anyone would like to test, I'd love to hear feedback, or if anyone else is interested in using Android devices in their cabs.. they will continue to get cheaper
Download here