VCSELs also offer enhanced security for mobile devices via their biometric identification capabilities. Conventional 2D facial recognition relies on the identification and analysis of key biometric points to verify a person's identity.
Images from two perspectives can be analysed to differentiate between a living face and a photograph used by a criminal. A major limitation of 2D facial recognition is the inability to differentiate between a living face and a pre-recorded video. VCSEL-based 3D facial recognition is more reliable because the facial structure is measured by a depth sensor, and the emotions conveyed via muscle movements can also be identified if required. Therefore, it is possible to differentiate between a living head and a pre-recorded video or 3D printed model. In 2018, Osram (Germany) launched their first VCSEL product (BIDOS) for 3D facial recognition. In the same year, ams AG (Austria) announced that their infrared VCSEL arrays enable facial recognition in Xiaomi (China) Mi 8 Explorer Edition smartphones via a structured light process. IDTechEx forecasts increased adoption of VCSEL-based 3D sensing technology in consumer electronics - in mobile devices and beyond. Increased market consolidation is also expected as companies make strategic acquisitions to enhance their business position.