Traditionally, fingerprint scanning areas of the device have been made of relatively fragile silicon metal or plastic.
This also makes them susceptible to scratches and environmental damage.
Now a specialist is offering a diamond-like coating that repels dirt.
The Diamonex DLC coating has some of the unique properties of a diamond.
The amorphous carbon material gives wear resistance and hydrophobic qualities to the scanner. It has a slick, smooth feel that reduces friction and repels dirt.
Supplier, Morgan Technical Ceramics says it “significantly extends the life” of a scanner without sacrificing its precision.
It means manufacturers will be able to offer more reliable fingerprint scanning products with a longer life span.
The company says as biometric scanners become more popular, particularly in tougher environments, damage to the sensor devices is becoming a problem.
“Wear and tear and environmental abuse is growing” says Richard Hobbs, general manager.
The US company offers the coating on products shipped to their premises or can supply coated systems.