Selling stolen metal in South Yorkshire should be more difficult after a website listing missing items was launched.
Each time the Scrapwatch website is updated, members, including scrap metal dealers, will receive an alert giving a description of the metal stolen.
Some alerts will also include photographs.
The free website service has been launched by charity People United Against Crime, based on Furnival Square in Sheffield city centre, and South Yorkshire Police.
It is funded by the National Metal Theft Taskforce.
David Ransom, Scrapwatch director, said: “The idea is that victims of metal theft should initially report it to the police and then the website.
“Police are asking as many metal dealers as possible to join and every time something is stolen they will be alerted.”
n Anyone with information about metal theft is asked to call police on 101.