Originally posted on 07/22/2014:

Bookmakers exchange player profiles via those methods (fraudulent / sharp / advantage player). If one book labels you as a sharp and you sign up to another from the same computer, they will exchange this information and you will be treated as a sharp from the very beginning, hence the limit. You must delete the profile data before signing up, it doesn't help if you delete it later. Google "iesnare" for more information, that is one of the technologies Unibet is using.