NFC I2C bridge tag for contactless authentication and configuration of IoT devices

The Infineon OPTIGA Authenticate NBT is a high-performance NFC I2C bridge tag for secure human-machine interfaces (HMIs). The bridge tag enables fast, contactless NFC communication between an IoT device with an I2C interface and a contactless NFC reader such as a smartphone. 

A Type 4 Tag certified by the NFC Forum, the OPTIGA Authenticate NBT can be used for single-tap authentication and secure configuration of an IoT device via an app on the user’s smartphone. The bridge tag is based on CC EAL 6+ certified hardware and provides

high security, thanks to its acclaimed Integrity Guard 32 security architecture.

The NFC-I2C bridge tag supports both symmetric and asymmetric cryptographic authentication, as well as pass-through and asynchronous data communication modes. These can be used for a variety of applications such as:

• Secured configuration of smart devices without a display
• Activation of shared mobility vehicles
• Passive commissioning of non-powered smart Wi-Fi^® or Bluetooth^® devices prior to installation
• Data logging on patient health monitors

Featuring an 8kbyte non-volatile memory, the NFC I2C bridge tag offers ample space to store customer- and application-specific configuration information. High on-chip capacitance enables the use of a smaller antenna to lower bill-of-materials cost and reduce board footprint.