Check your balance, send and receive 23 coins and ERC tokens through one single app. Warning: Electrum versions older than 3. The main principle behind hardware wallets is to provide full isolation between the private keys and your easy-to-hack computer or smartphone. Add-ons Electrum supports third-party plugins: Multisig services, Hardware wallets, etc. Effortless Exchanges Quickly exchange cryptocurrencies via the ShapeShift integration, directly from your wallet. Your wallet is never down. Generate and manage your private keys offline in cold storage, guarded from computer vulnerabilities and viruses, while utilizing wallet software for safe transactions.