Software components for biometric enrollment

BioComponents comprise Aware’s biometric enrollment application framework, and include a family of independent biometric enrollment software components. Each BioComponent is designed to enable rapid implementation of a robust browser-based biometric enrollment application with a high degree of configurability in terms of functionality and macro-workflow. Each BioComponent is modular, independent, and self-contained. They run in any modern browser and each operate independently and in concert, with each performing a specific biometric task. Each BioComponent has its own user interface, and performs all workflow and tasks required for biographic data capture and validation, biometric image capture and processing, hardware abstraction, quality assurance, and networking.

BioComponents are each provided with a proven reference “workflow”. The workflows can be configured or completely replaced. They run within a customer-designed UI allowing a custom application to be designed according to specific look and feel and business rules.

All BioComponents utilize APIs from Aware’s well-established and field-proven SDKs for underlying biometric functionality. They are designed to eliminate the need to program directly against Aware SDKs, but they include their own APIs to allow communication and data sharing with the main application. BioComponents are included in Aware’s Universal Registration Client (URC™) .NET enrollment application and WebEnroll, a browser-based biometric enrollment and data management solution.

BioComponents are particularly well-suited for supporting multiple different biometric enrollment applications from a single platform, with each having some different functionality requirements and constraints. Using BioComponents provides common capabilities, maintenance, and support, and yet enables simple configuration variations to accommodate the unique workflows of each application.




FingerprintComponent implements libraries from three Aware SDK products: LiveScan API, SequenceCheck, and Aware WSQ1000. It includes its own user interface and offers a variety of workflows to perform capture. It performs:

  • Real-time quality analysis and autocapture of slap images
  • Abstraction of live scan hardware peripherals
  • Segmentation of slap fingerprint images
  • Sequence checking
  • Post-capture quality analysis and scoring
  • Highly-optimized, FBI-certified WSQ image compression (500 ppi images)
  • Highly-optimized, FBI-certified JPEG 2000 image compression (1000 ppi images)
Biometric enrollment in a browser application - fingerprints

Biometric enrollment in a browser application – fingerprints

PhotoComponent is used to automatically capture biometric facial images according to U.S. and international biometric standards (e.g. ISO/IEC 19794-5).  It includes libraries from the Aware PreFace and CameraAPI SDKs. This component has its own configurable user interface and performs the following tasks:

  • Real-time quality analysis and autocapture of facial images
  • Post-capture quality analysis of facial images
  • Post-capture image processing (rotate, scale, crop, optimize)
  • Camera abstraction
  • Camera operation (zoom, brightness, color balance, shutter)
  • PhotoComponent supports consumer-grade cameras, webcams, and industrial cameras from many different vendors (see PreFace)

PhotoComponent can also be used to collect side profiles and SMT (scars, marks, tattoos).

Biometric enrollment in a browser application - face

Biometric enrollment in a browser application – face

ScanningComponent is used to scan forms such as inked fingerprint cards, and incorporates libraries from the AccuScan SDK product. It performs:

  • Flatbed scanner abstraction, with many FBI-certified scanners supported
  • Compliance with FBI EBTS Image Quality Specification
  • Cropping of individual fingerprint images from a form in preparation for compression and formatting


PrintingComponent is used for printing fingerprint images on cards and forms with quality sufficient for FBI-certification. It utilizes libraries from Aware NISTPack and AccuPrint SDKs. Functionality includes:

  • Parsing of fingerprint images from transactions, such as EFTS
  • Decompression of fingerprint images
  • Mapping of text and images to correct location on the form
  • Printing of card graphics such as lines and labels
  • Generation of 1-bit dithered image to simulate grayscales
  • Creation of a post-script or PCL-based image and sending to printer


NISTComponent has access to the data set that the other components build up, and also has the ability to save the currently entered data set or to alternatively replace the current data set with data from another saved data set. NISTComponent can:

  • Collect text-based biographic data
  • Save the current data set to a standards-compliant file (FBI EBTS or other)
  • Replace the current data set with a set selected
  • Build a transaction from the current data and submit it via SMTP, or web service to BioSP
  • Verify entire transactions

NISTComponent can then save or submit the updated transaction.