Designing FIDO2-Compliant Next-Generation Hardware Security Passkey

Adopted by: PONE Biometrics

Development Background

User-friendly solutions for phishing-resistant authentication are increasingly incorporating features such as fingerprint authentication for enhanced security, BLE, NFC, and USB communication for endpoint login, and phishing attack protection. Using NGK's EnerCera battery technology, PONE Biometrics has successfully developed the OFFPAD, a FIDO2-compliant security key that achieves a sophisticated design with dimensions of 86 x 54 x 2.5 mm and weighing just 17g, enabling phishing resistant login through fingerprint authentication.

To realize these functions in such a compact form factor, a reliable and space-efficient power source is essential. Conventional primary batteries lack sufficient capacity, and incorporating standard secondary batteries presents significant challenges in terms of thickness. The thickness requirement for secondary batteries in standard cards is typically less than 0.5mm, and traditional thin batteries provide insufficient capacity to support multiple security functions effectively. Furthermore, when implementing essential components such as fingerprint authentication sensors and BLE communication modules, the limited space available makes it crucial to have a secondary battery that is both ultra-thin and powerful enough to drive these features.

Table of Contents

The EnerCera's advantages

EnerCera Pouch (EC382704P-Hr)
Use Cases

Advanced security functions can be implemented on the card,including fingerprint recognition and other biometric authentication functions, blockchain private key functions, etc.
Expected Technological Contribution

EneCera Pouch’s thin and bendable characteristics can support power supply for devices such as card-type devices and sensor tags that require bending.

The EnerCera's advantages

✔️ Ultra-thin 0.45mm bendable battery
✔️ High capacity to support fingerprint authentication and BLE communication
✔️ Compatible with hot laminate processing in IC card manufacturing

Ultra-thin 0.45mm bendable battery

EnerCera is a bendable lithium-ion secondary battery with a thickness of only 0.45mm. Tests have confirmed it to have a bending durability of 5,000 cycles, significantly exceeding the 1,000 cycles required by ISO/IEC10373-1. Among secondary batteries, there are few thin batteries with bending durability, making EnerCera ideal for smart card implementation.

High capacity and high energy density

EnerCera’s high capacity allows it to support both fingerprint authentication and BLE communication. It can function as a battery for incorporating fingerprint authentication for identity verification and BLE communication for pairing with smartphones into cards, enabling smart card authentication.

Compatible with hot laminate processing in IC card manufacturing

EnerCera not only withstands the high temperatures of hot laminate processing during manufacturing but also has excellent cycle life, no swelling due to degradation, and high durability, comfortably maintaining battery life.

Use Cases

EnerCera enables PONE Biometrics to realize advanced security cards with sophisticated features such as biometric authentication, including fingerprint verification, and FIDO-compliant security functions. By utilizing this thin battery solution, sufficient space can be secured for critical modules while maintaining the card's slim profile. Currently, NGK is working with card manufacturers to develop even highly functional security cards, supporting enhanced authentication capabilities through reliable power supply. 2023 webbilder - bild 2.2442

OFFPAD RENDER 20210826_2

PONE Biometrics OFFPAD　https://ponebiometrics.com/

Expected Technological Contribution

In the future, smart card functionality is expected to further advance through new technologies that balance enhanced security and usability. EnerCera will continue to support the power supply requirements for card-type devices through its thin and bendable characteristics. The ultra-thin battery technology will contribute to the advancement of authentication hardware, enabling the integration of sophisticated features like biometric sensors and wireless communication.