Forgery and counterfeiting are becoming more and more important to government and business, said HP general manager Indigo division Rafi Maor.

By combining variable data and invisible ink digital printing can help take security to a new level.

Variable data can be printed with the ink, which can also be combined with other security features such as digital watermarks, barcodes, alphanumeric codes and barcodes.

The ink, which fluoresces red under UV, can be used in one of the six ink chambers of HP Indigos 1000, s2000 and ws2000 presses.

Its a speciality application that dovetails nicely with the industrial presses, said UK marketing manager Paul Randall.

The ink was first demonstrated last year at Ipex and is now commercially available.