Smartphone makers have spent years trying to eliminate display notches and camera cutouts without sacrificing biometric security. A new technology from Boston-based optics company Metalenz may offer a solution by making Face ID-style authentication systems effectively invisible beneath OLED displays. The company’s new Polar ID platform uses advanced metasurface optics and polarization sensing to enable secure facial recognition without the bulky hardware traditionally required for depth mapping, tells Wired.com.
Conventional facial authentication systems, such as Apple’s Face ID, rely on multiple optical components, including infrared projectors and depth sensors, which require large display cutouts. Metalenz instead replaces traditional stacked lenses with flat metasurfaces containing nanoscale structures that manipulate light directly. This drastically reduces the physical size of the sensor system while maintaining high optical performance.
The company’s Polar ID technology also captures polarization data, which measures the way light reflects off materials. Human skin produces a different polarization signature than silicone masks, photographs, or prosthetic replicas, allowing the system to distinguish real faces from spoofing attempts. According to the article, Metalenz claims the technology meets high security standards while functioning in lighting conditions that often challenge camera-based face-unlock systems.
At Display Week 2026, Metalenz demonstrated a prototype in which the Polar ID sensor operated underneath an OLED panel. While under-display selfie cameras have historically suffered from degraded image quality, polarization sensing is less affected by the distortion caused by display layers. The system requires only a slightly thinned section of the display, making the authentication hardware nearly invisible during normal use.
The technology could have significant implications for Android smartphones and laptops, many of which lack secure face authentication comparable to Apple’s system because of size and cost limitations. Metalenz previously partnered with Qualcomm to scale production, with commercial deployment expected in 2027 and under-display versions potentially arriving by 2028.
Beyond aesthetics, the article highlights a broader shift toward compact computational optics and AI-assisted sensing systems. If successful, Metalenz’s approach could help redefine biometric security while finally delivering the uninterrupted screen designs smartphone manufacturers have pursued for more than a decade.