A hardware wallet is a special type of cryptocurency wallet which stores the user's private keys in a secure hardware device. They have major advantages over standard software wallets.Private keys are often stored in a protected area of a microcontroller, and cannot be transferred out of the device in plain text immune to computer viruses that steal from software wallets can be used securely and interactively, as opposed to a paper wallet which must be imported to software at some point much of the time, the software is open source, allowing a user to validate the entire operation of the device.
External will always be better over internal with exchanges being hacked the best way is at the end of the day transfer all earning into your hard ware wallet. Avoid saving passwords and key words on your computer. Even on apps for you phone API keys can be vulnerable if connected to a public wifi network.
