Evolving rule based contact exchange

A system for controlling use of contact data, the system comprising a contact management module arranged to:

• generate initial access right data defining one or more restrictions on connecting an electronic device of the second user with an electronic device of the first user via a network;
• generate contact data unique to the second user;
• provide the contact data to the second user;
• receive a contact from the electronic device of the second user, wherein the contact is received via the network and is made using the contact data;
• block the electronic device of the second user from connecting with the electronic device of the first user, via the network, based at least in part on the initial access right data;
• and
• at least partly in response to the contact, automatically modify the initial access right data based on the contact and a characteristic of the contact, the modification generating modified access right data.

A method of controlling contact between a first user and a second user comprising:

• generating initial access right data defining one or more restrictions on connecting an electronic device of the second user with an electronic device of the first user via a network;
• generating contact data unique to the second user;
• receiving a first contact from the electronic device of the second user, wherein the first contact is received via the network and is made using the contact data;
• blocking the electronic device of the second user from connecting with the electronic device of the first user, via the network, based at least in part on the initial access right data;
• generating first modified access right data based on a characteristic of the first contact, the first modified access right data including at least one restriction on connecting the electronic device of the second user with the electronic device of the first user via the network;
• receiving a second contact from the electronic device of the second user via the network, the second contact satisfying the at least one restriction;
• permitting the electronic device of the second user to connect, via the network, with the electronic device of the first user;
• and
• generating second modified access right data, wherein the second modified access right data does not define any restrictions on connecting the electronic device of the second user with the electronic device of the first user.