A portable communication apparatus has a man-machine interface, a controller,
an
operating system, a local storage device for storing a first application, a secure
resource which is only accessible from the operating system, and a wireless interface
for connecting the portable communication apparatus to a remote device. The man-machine
interface provides interaction between a user of the portable communication apparatus
and the first application when the first application is executed by the controller
and the operating system. The man-machine interface also provides interaction between
the user and a second application originating from the remote device. Only the
operating system can provide a security indicator through the man-machine interface.
The security indicator indicates a secure connection between the secure resource
and either the first application or the second application, whichever is interacting
with the man-machine interface.