Is it possible to set :format using map.resources?

It seems to be really easy to use responds_to if you are using a
map.connect route to set the format for mobile. But how would you do the
same thing with a map.resource route?

Works:
map.connect “mobile/people”, :controller => “people”, :format =>
“mobile”

Doesn’t Work:
map.resources :people, :format => “mobile”