How can you identify the station that a webfaced app is launched from

[Guest.Visitor]

Is there a way to name the device specifically or have some parameter passed when the sign on to the AS400 into a webfaced WAR application? I have an app that is run from several locations and it logs on automatically as a specific userid. I would like to be able to have a specific name for the job or for the device when they run it. Does anyone know if this can be done? Thanks.