The worlds first ISO compliant flexible sensor

A large percentage of existing fingerprint readers on the market use silicon technology due to its maturity as well as its established supply chain. Capacitive sensors have been the dominant technology because they allow compact fingerprint sensors in comparison to the main alternative approach of optical fingerprint sensors, which have been more bulky due to the optics used to de-magnify and focus the image. More recently, some companies have created a new generation optical fingerprint sensors that are built from large area amorphous silicon transistor arrays on glass that don’t need the bulky optics, because no demagnification is required. These arrays can be manufactured on existing FPD (flat panel display) manufacturing lines, but like a display, the resulting large area sensor is glass-based, limiting the robustness, flexibility and light-weight attributes of the sensor module.

Flexible fingerprint readers can add value to biometric applications by providing solutions that aren’t possible with amorphous silicon sensors. Apart from being thin, light and shatterproof, a flexible fingerprint sensor can enable curved large area sensors that can image five fingers in a single acquisition without requiring the floor space of a palm sensor; they offer cost reduction benefits too. Moreover, flexible sensors can be seamlessly integrated around tight curves like automotive steering wheels, door handles and other consumer electronics devices, opening the door to new markets and use cases. Flexible sensors are also easier to integrate into smartcards, which is another emerging market for biometric applications. Click here to read more...