Biometric Cards

Biometric Smart Cards Overview

Overview of biometric smart cards: on-card fingerprint sensors, match-on-card architecture, and market adoption.

| 4 min read
  1. Biometric Smart Cards Overview
  2. Component Architecture
  3. Market Landscape (2024–2025)
  4. Matching Accuracy Metrics
  5. Power Considerations
  6. Regulatory and Standards Landscape

Biometric Smart Cards Overview

A biometric smart card integrates a fingerprint sensor, a biometric processing unit, and a conventional smart card chip into the same card bodycard bodyHardwarePlastic substrate forming the card physical structure.Click to view →. The defining feature is on-card matching (Match-on-CardMatch-on-CardBiometricBiometric matching performed inside the smart card chip.Click to view →, MoC): the fingerprint template is stored inside the secure element, the comparison algorithm runs entirely on the card, and only a pass/fail Boolean leaves the card — the biometric data itself is never transmitted.

This architecture eliminates the privacy risks associated with server-side biometric databases and enables strong two-factor authentication (something you have + something you are) without exposing the template to the reader or host system.

Component Architecture

┌──────────────────────────────────────────────────┐
│                  Card Body (PVC, 0.8 mm)          │
│                                                    │
│  ┌──────────────┐   ┌───────────────────────────┐ │
│  │  Fingerprint  │   │     Smart Card Chip       │ │
│  │  Sensor       │──►│  ┌─────────────────────┐ │ │
│  │  (capacitive  │   │  │  Biometric MCU       │ │ │
│  │   or optical) │   │  │  (template + match)  │ │ │
│  └──────────────┘   │  └─────────────────────┘ │ │
│                      │  ┌─────────────────────┐ │ │
│  ┌──────────────┐   │  │  Payment / PKI App  │ │ │
│  │  Battery      │   │  │  ([JavaCard]/[GP])  │ │ │
│  │  (optional)   │   │  └─────────────────────┘ │ │
│  └──────────────┘   │  [EEPROM]: template store │ │
│                      └───────────────────────────┘ │
│        Contactless antenna (ISO 14443)             │
└──────────────────────────────────────────────────┘

Cards in the EMV biometric programme (Mastercard, Visa) add a fingerprint sensor in the lower-right corner and harvest RF energy from the payment terminal to power the sensor and matching chip — no battery required.

Market Landscape (2024–2025)

Vendor Card Platform Sensor Target Market
Fingerprint Cards (FPC) FPC1300 Capacitive area Banking, access
IDEX Biometrics IDEX TrustedBio Capacitive area Banking, government
Infineon SLC38 + SECORA Pay Bio Capacitive strip EMVEMVApplicationGlobal chip payment card standard.Click to view → payment
Zwipe Zwipe Pay ONE Capacitive area Banking
Thales Gemalto Biometric Card Capacitive area Banking, enterprise
HID Global Crescendo Bio Capacitive area Enterprise access

Matching Accuracy Metrics

Biometric smart cards are evaluated using three primary accuracy metrics:

Metric Definition Typical Target
FAR (False Accept Rate) P(match different finger)
FRR (False Reject Rate) P(reject correct finger)
FTE (Failure to Enrol) P(enrolment fails) < 1%
FTA (Failure to Acquire) P(sensor cannot capture) < 2%

See Match-on-Card Technology for a deep dive into the on-card comparison algorithms and template formats.

Power Considerations

Scenario Power Source Notes
Contactless payment RF harvesting (ISO 14443ISO 14443StandardStandard for contactless smart cards.Click to view →) ~6 mW available at 13.56 MHz
Contact (chip & PIN) VCC contact padcontact padHardwareGold electrical contacts on card surface.Click to view → (3V/5V) Full power available
Battery-assisted On-card thin battery 5–7 year life; enables always-on
Dual-interface + battery RF + battery hybrid Sensor active before tap

Battery-free operation requires the fingerprint capture and match to complete within the ISO 14443 activation window — typically 300–500 ms — placing tight constraints on sensor resolution and matching algorithm complexity.

Regulatory and Standards Landscape

Standard Scope
EMVCoEMVCoStandardBody managing EMV payment standards.Click to view → Biometric Card Specification Payment card biometric CVM
ISO/IEC 19794-2 Minutiae-based fingerprint data format
ISO/IEC 19794-4 Finger image data format
NIST SP 800-76 Biometric specifications for PIVPIVIdentityUS federal identity card standard.Click to view →
ANSSI / BSI Protection ProfileProtection ProfileSecuritySecurity requirements document for CC.Click to view → Biometric match security requirements

Use the EAL Comparator to compare biometric card security certifications, and Biometric Payment Cards for the EMV-specific implementation pathway.

คำถามที่พบบ่อย

Our guides cover a range of experience levels. Getting Started guides introduce smart card fundamentals. Security guides address Common Criteria certification and key management. Programming guides target developers working with APDU commands, JavaCard applets, and GlobalPlatform card management.