Device classes
Device classes are used in IBM® WebSphere® Portal as an abstraction for common properties for the device of a client. For instance, tablet computers can be grouped into a device class tablets, since they share a form factor and possibly other traits such as touch interface, or additional hardware sensors.
Note: The abstraction provided by device classes does not make the
defining properties explicit, but is rather indirectly done by the
assignment of device classes to clients.