> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sei.io/llms.txt
> Use this file to discover all available pages before exploring further.

> Comprehensive guide to Hardware Wallets on Sei. Learn key concepts, commands, and best practices.

# Hardware Wallets

Signing transactions manually or using hardware wallets like Ledger ensures
secure transaction approval. To sign Sei transactions, install the Ethereum app
(or the dedicated Sei app) on your Ledger device and sign through an EVM wallet
such as MetaMask.

<Note>
  The legacy flow that used the Cosmos app with a Cosmos RPC endpoint is
  deprecated: per [SIP-03](/learn/sip-03-migration), Cosmos-native interfaces are
  slated for deprecation on June 15, 2026. If you still hold funds on a Ledger
  Cosmos-app (`sei1...`) account, see
  [Migrating a hardware or mnemonic-only wallet](/learn/sip-03-migration#migrating-a-hardware-or-mnemonic-only-wallet).
</Note>

## Using MetaMask with Ledger

To connect your Ledger device through MetaMask and sign transactions:

1. **Install MetaMask**: Ensure MetaMask is installed on your browser.

2. **Connect Ledger**: Open MetaMask, go to the account options, and select
   “Connect Hardware Wallet”.

3. **Follow Instructions**: Follow the on-screen instructions to connect your
   Ledger device and select the account you want to use.

4. **Sign Transactions**: Once connected, you can sign transactions directly
   through MetaMask using your Ledger device.

**Installing the Ethereum App on Ledger**

Before you can use your Ledger device to sign transactions through MetaMask,
ensure you have the Ethereum app installed. You can install it through Ledger
Live:

• [Ledger App Store - Ethereum App](https://www.ledger.com/coin/wallet/ethereum)

Alternatively, you can install the dedicated Sei app from the Ledger Live App
Catalog — see [Ledger Setup](/learn/ledger-setup) for step-by-step
instructions.