Ramdot ® is a chaosmetric security technology using a random dispersion of optically variable particles

Chaosmetry relies on the recording of non clonable physical elements to create unique fingerprints.

For Ramdot ®, tiny variations in the initial conditions, during the dispersion of particles on the surface of the support, result in a final dispersion of  particles
that is totally unpredictable.

The characterization of a Ramdot® by its measurement gives a unique result allowing the identification of each of them in relation to the others.

Physical Characteristics


Ramdot® uses optically variable particles whose colors and sizes can be selected
to create a customized Ramdot®.


The thickness of the particles is sufficient to be perceptible to the touch.

It is therefore easy to check the volume of the Ramdot® by passing a finger over it.


Ramdot ® Seal

Ramdot® seals are built on a wide range of tamper evident security substrate.

This characteristic reduce the risk of removal and repositioning.

Security Levels


The optically variable particles of the Ramdot ® change color depending on the inclination.

Required equipment: None
Users: Professionals


Ramdot® is iridescent under UV light. An electronic signature of each Ramdot® is recorded to allow verification by eDMR® reader.

Required equipment: eDMR®
Users: Professionals


The dispersion of the optically variable particles of each Ramdot® is recorded in Prooftag Cerv to become the unique fingerprint of the product.

Required equipment: Smartphone, internet access
Users: General public

Product details

Prooftag cerv

  • Add product details and characteristics directly on the Prooftag CERV interface
  • Add additional information such as origin or composition
  • Register the languages available for viewing your products
  • Define the safety data associated with the product


Prooftag cerv

  • Connectivity and serialisation
  • Track & trace your products and identify the distribution channels of your products
  • Create shipping or product return events
  • Certitrack integration allows you to manage the users and applications that have access to your products


Prooftag cerv

Build customer loyalty by rewarding them for each seal scan


Prooftag cerv

  • Get an alert each time a seal is consulted
  • Receive product location information


Prooftag cerv

Consult the consultation statistics in real time by

  • country
  • consultation language
  • product type


Prooftag cerv
Monitor your markets in real time
and adapt your strategies in real time