The ECC204 is a member of the CryptoAuthentication™ product family. The device is targeted for disposable and ecosystem control applications and is intended to be used as a companion device with Microchip or other vendors’ microcontrollers. Consider implementing an ATECC608 in your host to perform the ECDSA P256 verify function of the signature your disposable or accessory would return. You could leverage that same ATECC608 for mutual authentication to an IoT cloud platform
For Qi 1.3 and Qi 2.0 wireless charging in consumer applications, refer to the ECC204 TrustFLEX WPC
For Qi 1.3 and Qi 2.0 wireless charging in Automotive applications, refer to the TA010.