American Express has launched Amex Passport, a program for US cardholders to collect digital NFT-format passport stamps. The initiative aims to replace physical passport stamps with a blockchain-based solution, reducing the risk of personal exposure. Amex stamps are designed to be non-transferable and have no economic value, making them digital souvenirs. The technical part is managed via Fireblocks’ Wallet-as-a-Service infrastructure, ensuring users never directly come into contact with private keys or transaction costs. The project is part of a broader digital renewal strategy that includes the release of the new Amex Travel app, which provides tools for travel planning and management. However, Amex Passport is only available in the United States, which limits its immediate impact on the European regulatory framework. The immutable nature of the blockchain conflicts with certain GDPR principles, such as the right to be forgotten and data erasure. Amex Passport’s model could be replicated by other players in the financial or tourism sector interested in strengthening customer relations through certified digital tools. However, significant issues may arise in the European market, including GDPR compliance, taxation, and ecosystem issues. As the NFT market matures, Amex Passport represents a significant test for the use of NFTs as functional tools, not just investment objects. If successful, it could pave the way for more widespread use of NFTs as functional tools.