The unique guest is recognised by Severso based on the unique IP address. this method is applied by all applications collecting analytical data in the Internet.
Each time, as the user he will change his IP address, you will have information, that it is new user. We don't apply so-called hard ‘ of cookies 'in your browsers is having staying. If the guest is visiting your web page one more time and his IP address doesn't change, in such a situation this another visit will be assigned to his profile.
Showing many previous visits of guests on your web page is a large Severso value added. The Severso code is aggregating another visits of the same user which is using the unchanged IP address.
Severso Clients