# Hybrid Custody Hyphen is based on a [Hybrid Custody methodology](https://flow.com/hybrid-custody). Initially, users hand over some of their keys for the sake of UX, but later they can obtain 100% control over their account when desired. In other words, it can be seen as [structurally centralized, but politically decentralized](https://medium.com/@VitalikButerin/the-meaning-of-decentralization-a0c92b76a274). ## Method A. Account Linking Users can link their wallets to the Hyphen Multi-Sig account. Here, 'linking' means the user's wallet becomes the Parent Account, and the Hyphen Multi-Sig becomes the Child Account, which falls under the control of the user's wallet. In Flow, account linking can be possible because the `AuthAccount` capability is implemented natively. Note that after linking the account, the parent wallet must load the child wallet's information as well (e.g., when listing tokens/NFTs for the user, all tokens/NFTs information from all Child Accounts must also be listed). ## Method B. Revoke Custodial Key You can gain 100% control over the account simply by removing the [Server Key](https://docs.hyphen.at/concepts/hyphen-multi-sig-account/server-key) from the account. Simply, send a transaction to revoke the server key from the Hyphen Multi-Sig account. However, a change/downside of this is that you will have to go through 2FA every time you sign a transaction thereafter. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.hyphen.at/concepts/hybrid-custody.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.