An important part of the debate on the Government's initiative on pornography filters should be whether they actually work. Here are five problems:
- Determined paedophiles seeking images will simply use the opt out button.
- Experts stress that paedophiles seeking images more often use "peer to peer" image sharing. In the past ITV News has investigated disturbing material being passed on social networks.
- Even the best filters do not stop all suspect material. Recent research suggested that even the very best will fail to detect about 10%.
- Filters designed to stop pornography usually stop other content too, leading to households routinely switching them off.
- The biggest internet experts in your home are probably your children - and ways to get around filters are already common knowledge in the playground.
More top news
The British public have voted St Paul's Cathedral the country's favourite building ahead of Stonehenge and Buckingham Palace.
A service to remember 'Operation Dynamo', the code name for the mass evacuation of allied troops in 1940, will take place on the beach.
The Bank of England has launched a secret project looking at the economic risk to Britain if the country votes to leave the European Union.