linux photocopy tracking

[Guy Steven]

Does anyone know of an application which will read data from one of those
little boxes that attach to a photocopy machine to track copies. We have a
ubix copier with that has a device called a Keytrac 842g model KT20. This
records a client code and keeps count of copies made. This information is
downloaded to a pc via a serial cable. Is there a protocol standard for
these types of device, and is there a linux application that will handle the
uploading/downloading of data.