Biometric Template on Card: Where security and data protection go hand in hand

In a world of digitisation and innovative technologies, data plays an important role. The security of this data, especially personal data and the privacy of individuals has become invaluable. The use of biometric access control is under pressure because it is not always clear whether it is in line with the AVG/GDPR legislation. This is unfortunate because technology is not standing still and good biometric solutions exist today.

To properly deal with the protection of personal data, there are solutions to still use biometric access control without violating AVG/GDPR. Template-on-card is the solution to make high-security access control, through double authentication work hand in hand with data protection. With template-on-card, the biometric template is written on an RFID card, so the user is and remains the owner of his or her personal (biometric) data, without it being stored in an external database. The biometric verification is as verification, not authentication.

The essence of Biometric Template on Card

The use of template-on-card avoids the need to store sensitive information in central databases, making this solution easier to accept under GDPR and other privacy regulations . The user has full control over his or her biometric data, minimising the risk of unwanted access(es) and (biometric) data loss due to data breaches.

To apply this concept, a biometric scanner as well as a DESFire card reader, which can read and write data to and from the card, is required at the door to be controlled. This reader reads the hashed code on the badge and compares it with the data presented by the user. This process, carried out quickly and effectively, provides double verification: the badge itself and the comparison between the template on the card and the actual, actual biometric scan.

New Synguard integration: Template-on-card with Palmki palm readers

An example of this innovative technology is the Palmki palm reader, which can be used in combination with a Synguard reader. Synguard has worked with Palmki to develop template-on-card operation, in combination with Palmki palm readers. This combination makes it possible to implement biometric template-on-card verification, where the user first presents the badge and then scans his or her palm. If the data match, verification is completed successfully. When verification is successful, access will be granted.

Applications and benefits of Palmki biometric palm authentication

The benefits of biometric palm authentication especially the 'Biometric Template on Card' concept, are numerous and versatile. Some key benefits include:

  • Access control and security: Biometric palm authentication offers an unparalleled level of security, where the user is his or her own key. Identity confusion is prevented, and the risk of unauthorised access becomes quasi-impossible.
  • Cybersecurity: With biometric authentication, software and data can be better protected against unwanted access and hacking. It provides an additional layer of security beyond traditional passwords, which are highly susceptible to hacking.
  • Ease of use and comfort: Users do not have to worry about forgetting or losing access passes or passwords. Their own biometrics are always at hand.
    Very high speed execution: The whole process is intuitive and fast thanks to the user-friendly palm reader and accompanying software.

Conclusion: The convergence of high-security and privacy

Template-on-card and Palm technology mark a major evolution in the security world. It offers an innovative approach to protect sensitive (biometric) information and comply with privacy regulations. The Palmki palm reader offer a reliable way to grant access while the data owner retains full control. Palmki technology not only focuses on high security, but also on convenience, hygiene (contactless module) and environmental awareness, demonstrating that security and privacy can go hand in hand.


  • Use biometric (non-reversible) crypto graphic templates (hashes) instead of biometric templates or images
  • Use biometrics as verification, not identification
  • Ensure templates are securely stored on the user's card and not in databases