NFC I2C bridge tag for contactless authentication and configuration of IoT devices
The Infineon OPTIGA™ Authenticate NBT is an NFC Type 4 asymmetric tag with an I2C interface, providing a contactless bridge between an NFC reader such as a smartphone and a host microcontroller.
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 I2C interface and a contactless NFC reader such as a smartphone.Â
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 tag provides high security because of the Integrity Guard 32 security architecture. It also holds EAL6+ security certification.
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 with no display
- Activation of shared mobility vehicles
- Passive commissioning of non-powered smart devices prior to installation
- Data logging on patient health monitors
Featuring an 8 kbyte 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.