1. "What’s the Recognition Accuracy & Speed?"

• Key Metrics:

  • Face Recognition: ≥99.5% accuracy (ask for NIST FRVT test results).

  • Speed: <0.3 seconds per verification (critical for high-traffic areas).

  • Conditions: Works in low light (IR support) and extreme temperatures (-20°C to 50°C).

• Red Flag: Vendors who can’t provide third-party accuracy reports.

2. "Does It Support Multi-Factor Authentication (MFA)?"

• Must-Have Options:

  • Face + IC card + fingerprint (e.g., ZKTeco SpeedFace-V9).

  • Mobile app/BLE integration (e.g., Suprema BioStation 3).

• Ask: Can I enable/disable authentication methods remotely?

3. "How Scalable Is the System?"

• Storage:

  • Minimum 50,000 face templates (enterprise-grade terminals store 100,000+).

• Software:

  • Cloud-based management (e.g., Hikvision iVMS-4200).

  • API for HR/attendance integration (e.g., TimeTec).

• Ask: Is there a license fee for additional users?

4. "What’s the Anti-Tampering & Anti-Spoofing Tech?"

• Security Features:

  • 3D depth sensing (to block photos/videos).

  • Tamper alarm (triggers if device is forcibly removed).

  • IP65+ rating (dust/waterproof for outdoor use).

• Ask: Does it comply with ISO 30107-1 (liveness detection standards)?

5. "What’s the Total Cost of Ownership (TCO)?"

• Hidden Costs to Clarify:

  • Installation: Does the quote include mounting brackets/power adapters?

  • Maintenance: Are software updates free for 3+ years?

  • Warranty: ≥2 years for hardware (e.g., Dahua’s 3-year warranty).

• Budget Tip: Compare wholesale pricing for 50+ units (saves 15–30%).

Bonus: Pro Questions to Ask Vendors

• "Can I test a demo unit for 7 days?" (Avoid compatibility surprises.)

• "Show me a live demo of the admin portal." (Check UI friendliness.)

• "Do you offer GDPR/CCPA compliance documentation?" (For EU/US buyers.)

Example: A factory saved 40% on replacements by choosing a 10.1-inch Hikvision terminal with anti-corrosion coating—ask about environment-specific durability.