WCF: Authenticated Token Authentication over the Basic HTTP Protocol

Question

I'm trying to make a WCF service that will use token-based authentication (so I don't need to send a username and password with every request), but I would like the interface to be simple, ideally Basic HTTP (S), because I need Be able to call a service from Flash. It seems that Token Token authentication mode should be used with WS-Federation (and also comes with a number of other complexities like SAML and STSes).

Can I use token-based authentication through Basic HTTP? If not, what is the best way to execute this scenario?