# Hardware cryptocurrency wallets Hardware wallets are a physical device. They provide an added layer of protection as the wallet’s private key is not stored in your browser or even on your machine - it is stored on the hardware device itself. [Trezor](https://trezor.io/) is a widely-used hardware wallet, and it supports most major cryptocurrencies, including all [ERC20 tokens](/legacy-documentation/community-resources/using-the-energy-web-chain/token-bridge.md#erc-20-token-standard) and[ Energy Web Token](https://trezor.io/coins/#EWT). We provide direction on how to connect your Trezor Hardware Wallet to MetaMask here (link), and to a local node of the blockchain here(link) --- # 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.energyweb.org/legacy-documentation/foundational-concepts/wallets-and-exchanges/hardware-cryptocurrency-wallets.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.