We got Exchange 2013 cu3 envirnment.
some of the users are using shared desktops from there access their mail using owa 2013.
the requirement is open user mailbox using url.
it was happening in exchange 2010.
http://technet.microsoft.com/en-us/library/aa998830(v=exchg.141).aspx
Please check the above link.
by using owa 2013 url in last we have add the email address of user. but its not happing in owa 2013
Please suggest