Don,t know what a vpn is..sorry.
It sounds very technical, a Virtual Private Network. In reality, in Turkey, it is a program that is normally used to con UK websites into believing you are in the UK (which you must be to watch the likes of BBC iPlayer, TVcatchup etc).
I watch all these abroad using Hotspot VPN, no smart TV, just Hotspot, my iPad and a cable that cost me a tenner