This technique refers to the concept of an intervention through a public authority. This could relate to competition or regulatory issues but also cover the question of redress. Activities can range from pure influencing behaviour to approval or strict enforcement/coercion. Another possibility could be to bring collective redress to court. There are also mixed types possible. In this case, boundaries between Ombuds entities and public authorities are blurred. Examples exist in the Nordic States (Denmark, Finland, Norway and Sweden). Here the Consumer Ombudsman is the principle national enforcement officer.