I use it on my iPhone as an App and on my home PC as a webpage. All works fine. You do have to log in each time you access the webpage. I'm pretty sure you have to preregister each device on the virgin website before they'll work, and I think you're limited to two or poss three devices only. For movies and sport you have to use the Sky Apps or websites and then log in to those using your Virgin credentials. I can't recall exact details as I use it mostly to watch the sport while the family watches some other crap, but I think not all channels are streamable. For instance I think virgin are restricted from streaming BBC and Channel 4, so you'll probably be redirected to using iPlayer or All4 services. It's all quite handy though.