> For the complete documentation index, see [llms.txt](https://docs.satoshiterminal.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.satoshiterminal.io/documentation/data-privacy-and-security/access-controls-and-authentication-for-crypto-systems.md).

# Access Controls and Authentication for Crypto Systems