Transferring ownership of account

I've just moved out of an apartment, but one of my now former roommates has re-signed the lease. I already have Wifi at my new residence and, naturally, I would like for my former roommate to take over the Xfinity account. I (of course) can't speak to anyone over the phone about this issue, and none of the automated chat responses are helpful either. Most relevant forum posts are old enough that I am unsure if the process has changed.

Is the best option still to go to an Xfinity store with my old roommate and our IDs? Can it be done online? Is it even necessary, or can I just give the roommate the login information and allow him to change the personal information attached to the account?