My Fingerprint is Not Working
Fingerprint enrollment quality is critical for reliable authentication. Poor technique leads to high false rejection rates. Follow these best practices to ensure accurate enrollment.
✅ Step-by-Step Guide
Step 1: Choose the Right Fingers
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Best options: Index and middle fingers
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Acceptable: Thumbs and ring fingers
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❌ Avoid: Pinkie fingers (too small for reliable capture)
Step 2: Prepare the Finger
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✔ Ensure the finger is dry, clean, and uncut
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✋ If too dry: Breathe on the finger to slightly moisten it
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💧 If too moist: Dry with a clean cloth or tissue
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🧴 Wash hands with moisturizing soap and use lotion for better ridge clarity
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🚫 Do NOT enroll fingers with cuts or heavy damage
Step 3: Proper Finger Placement
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🔍 Identify the core of the finger (where fingerprint ridges form loops or circles)
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📏 Align the top knuckle with the bottom edge of the scanner
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🟦 Place the core flat and centered on the scanner surface
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🧍♂️ Keep finger:
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Flat on the scanner
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Still after placing
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Firm, but not pressed too hard (avoid blurring)
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⚠️ Common Mistakes to Avoid
❌ Don’t Do This | ✅ Do This Instead |
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Scan only fingertip | Use the flat pad of the finger |
Scan off-center (left/right edge) | Center the finger on the scanner |
Scan at an angle | Keep the finger perfectly flat |
Press too hard | Apply gentle, even pressure |
Move finger while scanning | Hold finger still until scan ends |