Product Features: Captured using the front-facing camera of Oppo series smartphones released after 2023. Models maintain eye contact with the camera, with a shooting distance of 20–50 cm (selfie unlock distance). Includes six lighting conditions (normal light, side light, backlight, front light, low light, warm light). For each participant: at least 15 photos for Black, White, and Asian (Chinese) individuals; at least 25 photos for Brown individuals. The dataset includes 25 pairs/groups of twins or look-alike individuals. Ethnicities Collected: Black, White, Asian (Chinese), Brown. Age Range: All adults. Image Specifications: 1080P resolution or higher.