all of them independently. Identification key is not secret, but it is
encrypted (obfuscated) during transmission.
+The only platform specific requirement is TAP network interface support.
+API to that kind of device is different, OS dependent and non portable.
+So only a few operating systems is officially supported. Author has no
+proprietary software to work with, so currently there is lack of either
+popular Microsoft Windows or Apple OS X support.
+
@itemize @bullet
@item
Works with @url{https://en.wikipedia.org/wiki/TAP_(network_driver), TAP}