Surveillance technology company Digital Barriers on Monday announced three new contracts worth £1.5m.The group won a contract of £0.75m with an Asia Pacific company and another with a commercial organisation worth £0.18m for its surveillance platform.Digital Barriers also announced it is investing in the UK market by securing a £0.6m work with a customer government department.Chief executive Zak Doffman said: "TVI is ideally suited for law enforcement agencies around the world, and the technology has proven itself time and again as the undisputed class-leader in delivering live video across limited or variable bandwidths, such as cellular networks."Shares were up 1.5% to 38p at 14:37 on Monday.