Yale is offering locksmiths a letter plate restrictor, which can reduce the risk of vandalism, theft and lock manipulation for consumers.
The letter plate restrictor from Yale prevents theft by reducing the opening of the letter plate and disabling would be criminals from inserting tools, which might otherwise retrieve possessions from the home.
Best known as 'key fishing', this particular type of crime is rising across the UK with burglars accessing keys to properties or vehicles through the letter plate.
The new product from Yale may be adjusted to allow full closure, part restriction or full opening of the letter plate, and comes with a two-year guarantee.
The product is compatible with the majority of letter plates, including those on wooden, PVC or composite doors, allowing locksmiths to cater for a broad range of potential customers.
David Herbert, Head of Marketing for Yale, said: "Everyone knows to lock their windows and doors for security, but not all of these people consider how a simple letter plate can provide access to their valuables too.
"With awareness of this issue on the rise, we have worked to develop a simple solution that locksmiths can add to their existing range of products which combat domestic crime and improve peace of mind."