# Introduction ## Smart wallet built for Harmony ### What is Sef Wallet? *Sef Wallet* is a smart wallet built for Harmony. It’s designed to not require passphrase, password, email, or password but instead uses Google Authenticator to recover your wallet. It’s self custody, private, open-sourced, and security audited. ### Features: #### Connects with your Harmony’s Dapps & Defi ecosystem Works with any app that integrates WalletConnect. #### Advanced security Protect your wallet from one device, multiple devices, or ask your friends or family to approve transactions. Recovery requires 5 consecutive codes from your Google Authenticator (or other OTP app) #### Built for the future Upgradable contract without changing smart contract address. --- # 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://sefwallet.gitbook.io/sef-wallet/master.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.