23rd June 2021 - Prima Electronic Services has utilised its engineering experience and knowhow to help with healthcare work in the developing world. Cambridge-based start-up Simprints supplies fingerprint sensor modules to countries including Tanzania, Ethiopia and Bangladesh. These provide the means to accurately identify people in places where the forms of documentation which are commonplace in high-income economies are simply not available. In such situations, biometrics offer an effective alternative.

When plans were formulated by Simprints’ engineering team to produce the Vero 2, an upgraded version of its existing fingerprint sensing solution, the decision was made to engage with Prima. The local support, plus exceptional responsiveness and technical expertise it could provide were all recognised as being highly beneficial to the project’s completion within a tight deadline.

Prima and Simprints worked on rapidly finalising a fully functioning prototype. Together, the two companies established a highly efficient automated test process - with a bespoke, configurable test rig being constructed for this purpose. Once samples using the initial design had been made and tested, Prima implemented the required iterative changes. As Simprints’ operation is relatively small, most of the project’s main activities had to be outsourced. Prima therefore organised all the procurement, sourcing the complete bill of materials. In addition, Prima provided Simprints with useful guidance on potential supply chain issues, and helped to address these by suggesting modification to the design.

Prima Assigned to Produce Biometric Sensor Modules for Global Health Projects

biometric sensor module in use

Powered by a Li-Ion battery, the Vero 2 is a compact portable unit. With a 1700DPI resolution imaging array, this module conforms to ISO 19794-2, INCITS 378-2004, NIST SP 800-76 and FBI biometric standards. It provides a method for hospitals, clinics and pharmacies to maintain continuity of patient treatment. With limited Internet connectivity in these locations, the Vero 2 needs to be able to work offline. Therefore, transfer of acquired biometric data is done by interfacing with an Android-based smartphone via Bluetooth connectivity. CE and FCC approved, the module exhibits the high degrees of robustness necessary for field deployment. It can deal with 90% relative humidity levels and operate in high ambient temperatures that can reach 45°C. An IP65 compliant enclosure prevents ingress of water and dust. In addition, the design has undergone extensive drop testing to ensure long-term reliability.


“At least a billion people around the world don’t have any documentation to prove their identity, so access to biometric data is vital,” says Alexandra Grigore, Chief Product Officer at Simprints. “Our next generation Vero solution had to incorporate various enhancements. The most important of these was the ability to transfer images in full, rather than approximations made on an alphanumeric template. This will give much greater scope for our data to interoperate with algorithms employed by other organisations. Further key aspects were improvements to the battery technology to extend operational lifespan, and use of RGB LEDs to enable better cultural acceptance. The advice and assistance we received from Prima was invaluable in meeting all our objectives.”


“The challenging nature of this project meant that our team had to work closely and collaboratively with Simprint’s engineers throughout. This was essential to achieving the results in such a short time frame, as prototyping, testing and the scale-up of production all had to be done at an accelerated rate,” states Claire Woods, Operations Director at Prima. “Having completed production of the original Vero 2 order, Prima is now ready to meet further shipment requirements.”


About Prima Electronic Services

Prima Electronic Services is a highly-effective and greatly valued contract manufacturing partner, with over 30 years of continued commercial success, supporting the medical device, laboratory, process and scientific instrumentation, industrial automation, communication, automotive, transportation, and commercial electronics sectors. The company offers a wide range of services - including PCB assembly, surface-mount assembly, conventional through-hole assembly and full product assembly (box build). Working closely with customers, its experienced technical team can take projects from the initial prototyping phase and rapidly move into full-scale production. Through its superior engineering credentials and stringent test/inspection procedures, Prima delivers products right first-time, regardless of the complexity level to ISO9001 and ISO13485 accredited standards.


About Simprints

Simprints’ mission is to transform the way the world fights poverty. We build technology to radically increase transparency and effectiveness in global development, making sure that every vaccine, every dollar, every public good reaches the people who need them most.

For more information go to: www.simprints.com

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Design services

  • PCB Layout
  • Design for Manufacture (DFM)
  • Hardware, software and mechanical design
  • Obsolescence management
  • Surface Mount Assembly (SMA)
  • Through hole
  • Advanced Rework
  • Automated Optical Inspection (AOI)
  • X-ray
  • Flying probe
  • Functional test

Box build

  • Complete product assembly
  • Product testing
  • Logistics
  • Repair and service
Find out more
Find out more
Find out more
Find out more

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