Identity checks should be introduced for pre-paid credit cards to help fight online child pornography, a Labour MP has said.
Geraint Davies wants people buying the cards to provide proof of ID and address to prevent them being used to purchase child porn on the internet.
The MP for Swansea West also wants credit and debit card companies to face fines if their products are used to access child pornography websites.
His Credit Regulation (Child Pornography) Bill would introduce the new regulations, which he said were necessary because the industry could not be relied upon to police itself.
Introducing the bill on 21 July 2010, Mr Davies said no personal details were currently required to purchase pre-paid cards with £100 loaded on them and they had therefore become popular with people wanting to buy child porn online.
They were also used by children to purchase knives and other illegal items, he told MPs.
"Existing controls - which were designed to target money laundering via the now-abolished Financial Services Authority - don't work to protect children or to stop the growth of online child pornography," Mr Davies said.
Mr Davies' bill has received cross-party backing, and is supported by a Commons motion signed by 55 MPs from six different parties.
He said he hoped the measures in his bill - which stands little chance of becoming law due to a lack of parliamentary time - would be adopted by the government.
After Mr Davies finished making his case, MPs voted to approve regulations which limit substantially the amount of money paid by the government into child trust funds.
This is an interim measure, as the government plans to bring in primary legislation to scrap the funds altogether.