Article 4

The measures necessary for the development of SIS II concerning the following matters shall be taken in accordance with the regulatory procedure referred to in Article 5(3):

1. (a)

   the design of the physical architecture of the system, including its communication network;

2. (b)

   technical aspects which have a bearing on the protection of personal data;

3. (c)

   technical aspects which have serious financial implications for the budgets of the Member States or which have serious technical implications for the national systems of the Member States;

4. (d)

   the development of security requirements.