How to identify the xibo player connecting to an external HTTP server?

Hi,
We tried using your solution reading the HardwareKey from the xml config file on the player but it seems to not work with WebOS.
We need to identify the players connecting to our HTTP server within an embed HTML control in order to display specific contents based on the player unique id, no matter which one (MachineKey, DisplayID, …).
How can we do that?

Maybe you can use the ip to identify ?