The ST25DV04K-IER6T3 is a 4-Kbit Dynamic NFC/RFID tag manufactured by STMicroelectronics. It features NFC Forum type V and an I2C interface with fast transfer mode and energy harvesting. The tag allows users to securely connect, provide Near Field Communication (NFC), and interact with their applications and devices. It also provides a secure data pipe between NFC enabled devices such as smartphones, tablets, and computers, as well as RFID readers. The chip features an on-chip EEPROM memory, ultra-low power operation, and a high data rate for transmitting and receiving data. The ST25DV04K-IER6T3 is suitable for a wide range of applications such as access control, prescription medication dispensing, contactless payments, product authentication, and asset tracking.