According to Decrypt, Apple continues to clarify its controversial stance on NFTs. The tech giant published updates to its App Store Review Guidelines on Monday with new language surrounding NFTs. In short, NFTs are allowed to exist within apps on the App Store—but they can’t unlock additional features or content. “Apps may use in-app purchase to sell and sell services related to non-fungible tokens (NFTs), such as minting, listing, and transferring,” the new guidelines read. “Apps may allow users to view their own NFTs, provided that NFT ownership does not unlock features or functionality within the app.” In addition, developers aren’t allowed to create “buttons, external links, or other calls to action” that might tell users how to circumvent the App Store to buy NFTs through other platforms. Instead, the App Store wants its users to make in-app purchases. Beyond just NFTs, Apple has also revised some of its language surrounding cryptocurrency exchange apps listed on its App Store.