Complete technical specifications for collecting 9,000 fingerprint photos captured via smartphone cameras across 900 participants covering 10 fingers and 10 distinct background surfaces.
Each participant provides exactly 10 photographs (1 photo of each finger of both hands). Each photo must contain only one finger.
| Category | Target Subcategories | Target Distribution |
|---|---|---|
| Region Target | Africa, Europe, Middle East, Southeast Asia, South Asia | 180 sets (20%) per region |
| Age Target | 18–25, 26–35, 36–50, 51+ | 25% per age group |
| Gender Target | Male / Female | 50% Male / 50% Female |
| Backgrounds | 7 Indoor (table, wall, sofa, floor) + 3 Outdoor (grass, asphalt, trees) | 70% Indoor / 30% Outdoor (All 10 photos must have different backgrounds) |
| Resolution | Minimum 720p HD (720px on shorter side), JPEG format | Clear fingerprint ridges and valleys visible |