Paypal is adding an optional Security Key to their service.. See the announcement here. This is great since it generates a new "token" every 30 seconds so no one can access your Paypal account even if they managed to get your user id and password without this device. 
I've tried to order one, but it never seems to be available... Maybe the Beta test is restricted to those in the US?
I've tried to order one, but it never seems to be available... Maybe the Beta test is restricted to those in the US?