Our contactless NFC4TC2K0 NFC tags are designed to meet higher levels of security typically required for authentication and similar applications. The tag incorporates the CIPURSE™ V2 open-standard security architecture and is compliant with the CIPURSE™ V2 cryptographic protocol specification based on AES-128. Commands and transmitted data can be secured using this protocol, which is inherently resistant to physical attacks like DPA and DFA.