Major gaming machine operator IOA Group is employing technology used by the US military to combat a multi-million pound machine fraud that has hit pubs.
IOA Group, which operates around 30,000 machines in British pubs, is using technology from IBM called Data Encryption Standard (DES) to halt the con.
Criminals have been able to steal cash from gaming machines by placing a decoder box near to the machines. The box encrypts the electronic codes in the gaming machine and can order them to give out money or establish credit in a player's account.
"Pubs have been hit very, very hard by this. Losses are running at million of pounds per year," said IOA Group national sales executive Ken Mullarkey.
He said DES will "massively reduce the risk of fraud". The device will be fitted to all new gaming machines from IOA.
Peter Weir, product lead at the IOA, said: "We are constantly exploring new ways to protect our customers' income and DES, which is the most effective protection available, is being fitted to all new gaming machine purchases.
"The IOA continually invests in the development of new technologies and this initiative demonstrates clearly our commitment to security and the protection of our customers' cash box."
IOA Group machines are used by major pub companies including JD Wetherspoon, Greene King, Scottish & Newcastle Pub Company and Punch, as well as several independent multiple operators.