Key Discovery

Hi,

I've just read the Key Discover Document and I'm a little confused about 
how to obtain the name of a key. Since you have to pass the name of the 
key to getKeyByName, you have to know the name of the key you want to 
use.In my opinion the web application has to identify the user agent in 
some way (e.g. cookies, username). In this case the "User Tracking" part 
confuses me, because if I delete the cookie used to recognize the key, 
the key can't be used for tracking anymore.

Did I miss something about the name discovery for key discovery?

Regards

Martin Becker