Can't locate MT4 Platform's (Unique Identifier)

Fernando Carreiro  
JKoresh: I want to use Magic Keys (Physical Device) and it's asking me for a unique terminal identifier which which is suppose to be a long mix of numbers and letters. I can't link Magic Keys unless I have that to sink it with the platform. Can anyone help or guide me. 
Magic Keys is a 3rd party device. Ask them for support on setting it up!
Reason: