Hardware wallets protect your crypto currencies in a very secure way. Your crypto-currencies are stored on the Blockchain, the physical wallet only ensures that the private data required to access to your crypto currencies are stored on its hardware chip so that you can easily receive and send your crypto-assets safely. To send your crypto currencies, a physical confirmation is required using the buttons on your hardware wallet. Hardwares wallets will create your private key and sign the transactions you want to make.