A number of companies are realising that fingerprint biometrics represents a reliable, fast and secure user authentication solution. They are looking for cost-effective and easy to design-in products that encapsulate the complete biometric functionality. As a result, autonomous fingerprint recognition modules are rising in popularity worldwide.
To address this growing need, STMicroelectronics recently introduced a new product called the Trusted Fingerprint Module (TFM). According to ST, the TFM has the same size as the ordinary fingerprint sensor, but it offers much more. A small but powerful built-in 32-bit RISC custom IC chip is able to scan, store and compare the fingerprints without the need for any additional CPU. This ASIC chip is integrated at the back of the silicon fingerprint sensor.
ST says that development of this module was only possible thanks to the excellent IC design expertise and more than seven years of biometrics experience of STMicroelectronics engineers.
Opening new opportunities for embedded fingerprint biometrics applications, the active sensor size is 18,0 x 12,8 mm while total package dimensions are 27,0 x 20,4 x 3,5 mm. The TFM's interface can be either USB or UART for TFM 1.1 and TFM 1.5, and both USB and UART for TFM 2.0. Time to verify the fingerprint is: 3-4 seconds (TFM 1.1); 1-2 seconds (TFM 1.5 and TFM 2.0).
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