I read about it a lot on slickdeals, and looked the the faq
here and it says:
Do I need a DirecTV subscription to access NFL Sunday Ticket?
No, it's not necessary to have a DirecTV subscription. Each Anniversary Edition includes a code that can be redeemed to access the full 2013 regular season (17 weeks) of NFL Sunday Ticket on computer, tablet, and mobile devices.
More info
here, and
here