Designed and manufactured by Foster + Freeman, the TFD-2 marks a breakthrough in the detection and enhancement of latent fingerprints using non-destructive thermal development.

The first of its kind, the TFD-2 is an automated, high-throughput device capable of developing fingerprints on large quantities of documents, dramatically reducing examination time and manpower requirements.

The simple process of heating a document to an optimum temperature induces a chemical reaction between the latent fingerprint and the paper to produce a fluorescent by-product that is visible under intense blue or blue/green illumination when viewed through an appropriate filter.

Controls maintain the optimum heating temperature and carriage speed to ensure that documents are undamaged. Developed fingerprints remain visible for more than 2 years.

TFD-2 Applications:

Non-destructive thermal development is effective on a wide range of paper types and has been used successfully to visualise latent fingerprints on banknotes, office paper, white and brown paper envelopes,  newspaper, notepaper, thermal receipts etc.

Application examples:

• Standard white office paper

• Chinese banknote

• Newspaper A

• Newspaper B

• US dollar bill

• White envelope