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 Conservatives have maintained their narrow lead over Labour with less than two days to go before the General Election, a poll suggests
Chester has a proud political legacy. But now this once-safe Tory seat is one of the key 2015 battlegrounds
A Ukip candidate has been suspended two days before the election, as a video emerged apparently showing him threaten to shoot his Tory rival