Interactive mobile content specialist Bango.net has launched new filter technology designed to stop children from accessing adult content on mobile phones.

Bango.net's technology relies on the company's provision for rating the content it hosts for third-party providers, such as ringtone and logo websites, as well as adult entertainment (the second largest content supplier for the company).

The company allows third parties to sell content or services through mobile operator portals, and acts as an aggregator for billing and delivery.

When a provider registers to use Bango.net's services, it must self-certify any of its content that contains material of a violent or sexual nature.

Any R-rated content is barred once a parent has enabled the filter using a £1.50 text message or via Bango.net's website for free.

George Kidd, director of the Independent Committee for the Supervision of Standards of Telephone Information Services, said the body supported initiatives to stop children accessing inappropriate content on mobile phones.

"We recognise that adult services will be one of many sectors seeking to make use of new technological platforms and premium charging," he said.

Rod Banforth, senior analyst of the wireless and mobile practice at Bloor Research, said: "This service can only be as good as the information the content provider gives Bango.net.

"Ensuring secure access to online content works best when there are as many obstacles like this in place to help parents gain control. As an aggregator and not an operator, Bango.net is taking measures that make it a leader in this space."