Beta Crack/Serial?

Hi, I am wanting to play in the BETA version but I don't have a key. I have purchased the game on Ebay but I want to play the beta before I get the game. How can I achieve this?

thanks

You can't on your current position. Only if you would buy the game at any of the retailers mentioned on the Blog (which is basically gamestop and the EA store, together with multiple stores in certain countries), you won't get a beta key automatically.

The only thing you can do to get one then, is earning it, getting a prize for some contest or whatever. I heard Modernwarfail2 is handing them out