DCS5 APPLICATIONS - foster€¦ · Fingerprints on Adhesive Tapes Difficult to handle and manipulate whilst wearing gloves, sticky adhesive tapes can prove to be a ready source of

DCS5 APPLICATIONSImaging fingerprints on sticky tapes

Application NoteISSUE 1

May 2017

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foster+freeman

DCS5: Imaging fingerprints on sticky tapesISSUE 1May 2017

Fingerprints on Adhesive Tapes

Difficult to handle and manipulate whilst wearing gloves, sticky adhesivetapes can prove to be a ready source of fingerprints for the crime scene examiner. However, while a section of tape used to bind a victim or wrap acontraband parcel may contain a great many prints, revealing and photographing these marks can often prove to be a difficult task.

Improving upon existing techniquesIn many fingerprint laboratories, a specialist adhesive-side reagent is used todevelop fingerprints on the sticky side of tape while cyanoacrylate fuming, incombination with a fluorescent dye, is the preferred method of developingprints on the non-sticky side.

In this proof-of-concept study, it is demonstrated that Longwave Reflected-UV examination may effectively eliminate half of the existing process by revealing extremely high quality fingerprints on the sticky side of cyanoacrylate fumed tapes, with no further treatment being required.

A P P L I C AT I O N I M A G E S

Longwave Reflected-UV 1‘Breakable’ Packing TapeWhite Masking TapeTransparent SellotapeRed Vinyl TapeWhite Vinyl TapeSilver Duct TapeWhite Duct TapeBlack Duct Tape

A turnkey system operated via a Windows PC, theDCS 5 Core Imaging System includes all components required to image and enhance fingerprints in the visible spectrum.

System EssentialsPro-grade copy standDesktop PC & 32” 4K monitorPhotographic Accessories

ImagingNikon D5 DSLR camera Infrared Imaging Filters

IlluminationFLS Bandpass Filtered Light SourceHalogen Light SourceFibre Optic Light Guides

UV Light SourcePowerful directional 365nm UV light source.

60mm UV Transmitting Lens This quartz/fluorite lens, is essential for Reflected UV Imaging but also provides excellent results in the Vis and IR.

UV Imaging Filter Set330-385nm bandpass filter

In order to accommodate the differing requirements of fingerprint laboratories worldwide, DCS 5 is a modular system that can be expanded through the addition of application specific modules.In order to perform the applications on the following pages, the DCS 5 Core imaging system must be equipped with the additional Reflected UV Imaging module.

DCS 5 Required Hardware

foster+freeman

DCS 5 Core Reflected UV Imaging+

Additional camera lens, light source and filters essential for Reflected-UV imaging.

DCS5: Imaging fingerprints on sticky tapesISSUE 1

May 2017foster+freeman

A Versatile Solution...For many years reflected UV imaging remained underappreciated and largely ignored by fingerprint examiners. However, recentstudies into Longwave R-UV have revealed the technique to be a powerful and versatile tool, capable of revealing high quality fingerprints on a wide range of subjects without the need for time-consuming and messy chemical treatments.

Longwave Reflected-UVUV radiation (wavelengths of light shorter than 400nm) is invisible to the naked eye. However, by equipping the DCS-5 camera with the60mm UV Transmitting Quartz Lens and 330-385nm bandpass filter, it is possible to record the Longwave UV radiation that is reflectedback from the subject to reveal impressive results from previously difficult subjects.

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Illumination: Crime-lite 82S UV (365nm)Light Filtration: 330-385nm Bandpass filter (blocks all visible light)Image Capture: 60mm UV Transmitting Quartz Lens

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Recognised for innovation in the field of latent fingerprints, our product range includes advanced systems for the development of fingerprints using traditional time honoured methods alongside new and novel techniques developed exclusively by foster+freeman.

Recent peer-reviewed papers include:Seeing into the infrared: A novel IR fluorescent fingerprint powder (2015)•NIR-NIR fluorescence: A new genre of fingermark visualisation techniques (2016)•Sunlight-activated near-infrared phosphorescence as a viable means of latent fingermark visualisation (2017)•Fingermark visualisation on uncirculated £5 (Bank of England) polymer notes (2017)•The use of infrared fluorescent reagents for the enhancement of latent fingermarks from notoriously troublesome backgrounds (2017)•

Pharmaceutical Packaging Latex Glove Crisp Packet Glass Bottle



Illumination Halogen VisibleLens 60mm UV/IRFilter Vis Pass

Illumination Crime-lite 82S UVLens 60mm UV/IRFilter UV Pass

Longwave Reflected UV examination of fingerprints on a selection of cyanoacrylate fumed sticky tapes.

‘Breakable’ Packing Tape

White Masking Tape

‘Breakable’ Packing Tape

White Masking Tape

DCS Enhanced





Clear Sellotape

Clear Sellotape

Red Tape

White Tape

DCS Enhanced





Silver Duct Tape

Silver Duct Tape

White Duct Tape

Black Duct Tape

foster + freeman

www.fosterfreeman.com

USA Sales Office46030 Manekin Plaza | Suite 170 | Sterling | VA 20166 | USA

Tel: 888 445 5048 | [email protected]

Head Office, UK Sales OfficeVale Park | Evesham | WR11 1TD | United Kingdom

Tel: +44 (0)1386 768 050 | [email protected]

DCS Enhanced

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DCS5 APPLICATIONS - foster€¦ · Fingerprints on Adhesive Tapes Difficult to handle and manipulate whilst wearing gloves, sticky adhesive tapes can prove to be a ready source of