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Breakthrough in non-contact biometric technology
Linde Gases says it has made a significant leap forward in fingerprint identification technology with the introduction of its automated latent mark visualisation system – the ADROIT FC300.
This dry, non-contact technology uses a gaseous application process for developing latent fingerprints. The system eliminates both the hazardous carrier solvents used in traditional processing methods and the need for physical application of these materials by dipping, spraying, brushing and drying.
Calvin Knaggs, marketing manager, Specialty Markets Equipment, Linde, said, "The new Linde technology is a flexible tool designed with both the forensic investigator and research scientist in mind. It’s a dry gaseous process, capable of developing latent prints on a wide range of porous and nonporous materials including thermal papers. The programmed recipe control lends itself to standardised practices, ensuring precision while eliminating the complexities and potential inaccuracies associated with mixing and applying solvent carriers.
He adds that this is truly a step change in fingerprint development technology as it eliminates many of the storage, safety and environmental problems associated with the current systems.
The Linde technology works bt applying detection chemicals by sublimation and dilution in a proprietary carrier gas injected into a low-pressure environment.
The gas mixture then expands, uniformly coating all exposed surfaces (which will include the evidence), thus depositing a thin film which adheres to, or chemically reacts with, the print residue making it visible to the unaided eye or under alternate light source (ALS) or laser excitation.
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