According to a statement released by the office of competition commission Joaquín Almunia on Tuesday, the joint venture is unlikely to impede effective competition in the mobile wallet market, which involves users being able to pay for goods with their handsets.
"Mobile commerce is a nascent sector that may radically change the consumer buying experience in the next few years," Almunia said. "The proposed joint venture is one of several initiatives to develop the sector in Europe."
"The Commission is keen on promoting innovation in this area and ensuring that the markets remain open so that a number of competing solutions can emerge without undue obstacles, to the benefit of consumers."
The scheme will provide a unified clearing-house for retailers, banks and advertisers who want to target the operators' customers.
Three, which has not yet commented on the Commission's decision, had complained that it was effectively shut out of the joint venture. When the scheme was announced by all its major competitors, Three said the first it had heard of it was through press reports.
"The proposed joint venture is one of several initiatives to develop the sector in Europe" — Joaquín Almunia
The other operators said at the time that the joint venture would be run separately from its parent, and that Three would be welcome to sign up as a customer. However, they did not explain why Three had not been invited to join as a founder.
Google and PayPal had also complained about the joint venture. Those companies provide alternative mobile payment services, and expressed fears over the operators' plans to securely store sensitive banking information on the SIM cards that they control.
The Commission acknowledged that the operators hold the keys to secure SIM access, but said they were unlikely to block rival approaches to mobile payments that do not use that method.