Nets, a digital payments specialist, has launched a test of finger vein payments at the Copenhagen Business School in Denmark.

The system, developed in collaboration with CBS, Smart Payments and Fingopay, lets students and visitors at the school cafeteria buy lunch simply by scanning their finger.

Finger vein payments are even more secure than fingerprint biometrics, as finger vein patterns are almost impossible to replicate and blood circulation must be detected for the payment to be authenticated, according to a press release.

Account holders in Dankort, the Danish domestic card scheme, can enroll in the system and link the unique pattern of veins in their finger to their account.

This assurance of increased security means that even high-value transactions using finger vein scanning do not require the extra step of PIN entry.

Finger vein payments are as secure as purchases made with the physical Dankort, and users have the option to unlink the finger scanning function from their Dankort at any time if they no longer wish to make use of the technology, the release said.

"The pilot underway at CBS demonstrates how fast payments technology is developing," Jeppe Juul-Andersen, Nets vice president of the Dankort sector, said in the release. "In 2017 we launched Dankort on the mobile using brand new technology, and now only one year later customers can become their Dankort themselves. ... We are excited to see how card holders find the finger vein payment experience. If they react positively, we will consider launching pilot schemes in other Nordic countries as well."