@startuml
skinparam BackgroundColor F0F0F0

participant "Service Cellular" as srvclr
participant "Application Manager" as appmgr
participant "ApplicaionDesktop" as appdsktp
    == PIN flow overview ==

[o->srvclr : event occurred
activate srvclr
srvclr -> appmgr : ActionMessage via sys::bus message
    activate appmgr
deactivate srvclr
    appmgr -> appmgr : translate request to action
    appmgr -> appdsktp : forward action
        activate appdsktp
    deactivate appmgr
        appdsktp -> appdsktp : handle(Action)
        alt
srvclr <- appdsktp : Message via sys::bus message
activate srvclr
        deactivate appdsktp
srvclr -> srvclr : handle(Message)
deactivate srvclr
        end
@enduml