I have multiple asp.net sites. When a user logs unto one of the sites, I want to store a cookie telling me that a user has logged on. When the user later visits one of the other sites I have, I would like to read the cookie from that site.AFAIK you neither can read cookies from or write cookies to other sites, so what could a workaround be?Perhaps making a redirect to http://www.othersite.com/SaveCookie.aspx ?Give me some ideas 