For close to 40-years, the foster+freeman Video Spectral Comparator (VSC) has been an essential tool in the field of Questioned Document Examination (QDE).

Used by QDE professionals in some of the busiest and most highly regarded forensic science facilities worldwide, each new generation of VSC workstation has further increased our ability to authenticate genuine items and to identify counterfeits and falsified documents of an increasingly high quality.



 1980 A New Era of Document Examination

Following the successful development of the ESDA electrostatic detection apparatus, Doug Foster and Bob Freeman turned their attention to a new, far more advanced, workstation that would enable examiners to perform infrared examinations of documents for the 'rapid exposure of concealed information and assessment of authenticity' - the VSC-1 Video Spectral Comparator.

Unlike any existing forensic instrument, the VSC used a highly sensitive camera to display variations in IR absorption and fluorescence on-screen, allowing examiners to make real-time adjustments to boost clarity and contrast.



 1985 Going Digital

In the mid-1980's, Foster+Freeman introduced a software package for image processing using the Atari 1040ST computer. The software and computer were interfaced with the VSC to create the first complete questioned document processing system as we know it today.



 1990 Global Leaders

By 1990 the Video Spectral Comparator could be considered to be a global success with over 400 VSC instruments having been sold into more than 45 countries.



 1995 Small But Perfectly Formed

Throughout the 1990's, the VSC-4 range of instruments provided examiners with a compact solution to forensic-level document examination. Ideal for deployment at border control points, small-footprint VSC's remain a popular choice for locations where space is an issue.



 2000 New Millennium
VSC2000 workstation

At the turn of the millennium, Foster+Freeman launched the VSC2000, which introduced full color and infrared imaging, microspectrophotometry, automated operation via a Windows-based on-screen digital control panel, and an increased range of light sources.



 2005 Intelligent Document Examination

In 2004, foster+freeman released the first 'intelligent' VSC. The VSC5000 aided the examiner by autoselecting fluorescence filters to match the illumination source and introduced, for the first time, Auto-Examine routines.



 2010 Rapidly Developing Technology
biker dog VSC

In order to keep pace with rapid developments in computer processor and digital imaging technology, foster+freeman stepped up the development of new VSC instruments. In 2008 the company released the VSC6000 intelligent Video Spectral Comparator, soon to be followed by the VSC40 and VSC400 workstations. As camera technology entered the age of HD, foster+freeman responded with the upgraded VSC6000/HS and VSC40HD workstations.



 TODAY The world's most advanced range of VSC workstations

Our most advanced range of QDE instruments to date, the VSC8000, VSC800, VSC80, and VSC80i are equipped with a full range of examination features that meet the varied demands of contemporary document examination. Suitable for deployment in a wide range of settings, VSC instruments remain the technology of choice for dedicated QDE laboratories, busy border control points or the quality control department at a high-security printer.