Mobile technology has so far mostly been confined to the client side, for fairly obvious reasons - traditionally, clients are mobile, and servers are not. However, not only is hardware getting smaller, servers are too. When your application server can run on pocket-sized £25 hardware it opens up some pretty cool possibilities for wearable computing - your server is literally lightweight. Not only can you have location-based services, you can have locatable servers. This talk will demonstrate deploying a web application to a WebSphere application server running on a Raspberry Pi, embedded in a hat.