Training & Support

Training is a vital component for successful implementation of EvoFIT. In addition to reference materials available on this web page, we run comprehensive training courses with assessment, or shorter application-training courses, to fit with our licence agreements.

EvoFIT PC / Laptop

EvoFIT courses are regularly available as a standard option for new users either off-site or our main training facility in Preston. Training caters for existing composite officers (2 ½ day course) or those who have not constructed composites with witnesses previously (5 day course). We provide a certificate of successful course completion.

The comprehensive (5 day) training course is run by Professor Frowd or one of the EvoFIT training team, and includes:

  • Review of composite systems
  • Theory behind face perception and issues related to face construction
  • EvoFIT system training and software tool use
  • Competence gained through extensive EvoFIT practice
  • Role play interview and system practice
  • Creation of identity sought (wanted) poster
  • Problem-solving techniques
  • Instruction and practice using a specific artwork (paint) program
  • Creation of an identity sought poster
  • Review of ACPO Facial Identification Guidelines
  • The use of morphed, perceptual stretch and animated composites for media purposes
  • Assessment


We have provided a series of short guides for police operatives to supplement product training and support:

  • Holistic-Cognitive Interviewing (H-CI)
  • Perceptual stretch and perceptual backdrop image (PBI) format
  • Moving caricature (animated composite)

The following materials are available to download for EvoFIT use only. Included are instructional videos, to be used as part of practitioner training, and materials to support composite face construction with witnesses (who may also be victims of crime). It is recommended that users watch these training videos in the order listed below. Training materials are also provided as a series of PDF documents to download for further reference.

The first set of videos cover the management system used to initiate and store composites, and then (under the following section for forensic practitioners) describe in detail forensic face construction (for face-to-face interviewing and witness-use-at-home composite construction).

When permitted by your web browser, the training videos open in a new window / tab.

Management System

These chapters describe the online system for practitioner to initiate, manipulate and search EvoFIT composites. It also includes details about system access, composite usage tokens and account management.

Instructional videos for forensic practitioners

  • Using EvoFIT with witnesses (Stage 2): An example of what to say. This full-length video provides an example interaction between practitioner and witness using EvoFIT.

  • Additional videos
    • Session recovery. This video shows how to recover (recall) a session should your computer crash during face construction. You can recover any session started on a computer that has not been closed.

  • Written training materials
  • The following documents in PDF format are intended for practitioners who prefer to have access to training materials in a written format. Each document contains a chapter that can be downloaded for reference and, if required, printed. Practitioners are also invited to download sections from the Supporting materials listed below.

    1. A. Welcome: Overview of process (Prep., Stage 1 and Stage 2)
    2. B. Initial witness interactions (Prep. and Stage 1)
    3. C. EvoFIT face construction (Stage 2)
    4. D. Using EvoFIT with witnesses (Stage 2)
    5. E. Session recovery

  • Supporting materials
    • Verbal description sheet. This form can be used to record face recall. Use one printed sheet for each witness. See instructional videos for more information.
    • Briefing on iWitness This presentation provides background information on the self-administered procedure for witnesses to construct the face using EvoFIT. It should be useful for police staff who intend to be present when a witness constructs an EvoFIT composite him or herself.
    • Review of facial-composite systems. This reference chapter provides background information to facial-composite systems and associated techniques.

    Constructing composites using the standalone (non-internet) EvoFIT system

    This training course is designed for practitioners who have familiarity with EvoFIT, such as having constructed composites online (using a web browser) using the practitioner (face-to-face) and / or iWitness (self-administered) systems. The course reviews each stage in the process of constructing a composite for the EvoFIT system installed on a Windows PC or laptop. The final part on Additional system functions provides further training information..

    For information on conducting a suitable cognitive interview using the standalone (non-internet) EvoFIT system, please refer to Instructional videos for forensic practitioners above for training on Welcome: Overview of process (Prep., Stage 1 and Stage 2) and Initial witness interactions (Prep. and Stage 1).