Ledger Wallet is a smartcard-based crypto asset hardware wallet that brings optimal protection level to your cryptocurrencies without sacrificing control or usability. Hardware wallet are special kind of wallet which stores users private key securely in the hardware device. The private key is stored securely in the device microcontroller which makes it less vulnerable to hacks. Hardware wallet are mostly offline and need to be connected to a computer with internet connection in order to transact using the wallet helper software.
Ledger Hardware Wallets are created by Ledger a brand founded back in 2014 which specialize in creating infrastructural and security for cryptocurrencies and blockchain applications.
Currently, Ledger has three variations of it hardware wallet.
1. Ledger Blue
This is a class standard hardware wallet with advanced user experience, it is touchscreen enabled and can be connected to your computer via USB port. Currently, the Ledger Blue support over 30 cryptocurrencies including BTC, ETH and altcoins
2. Ledger Nano S
This is one most popular Ledger hardware wallet, it's really portable, simple, secure and easy to use. It's designed in form of a thumb drive and can easily be connected to your computer via USB port. Ledger Nano S supports over 40 cryptocurrencies allowing you to manage multiple digital asset using one hardware wallet.
3. To mark Bitcoin 10th anniversary, there is the Ledger Nano S - Whitepaper Edition available for sale which share similar characteristics with Ledger Nano S.
Currently, all Ledger hardware wallet support Windows(7+), Mac(10.8+) and Linux.
One thing i really love about Ledger is how they contribute to the open source community, most of their software are open source e.g Ledger Live Applications.
Pros Of Using An Hardware Wallet
1. Very Secure: Hardware wallet is devices which primary function is to secure private key in the best way possible. Most hardware wallet manufacturer makes use of technology used by credit card and bank companies which makes your wallet less vulnerable to hacks.
2. Best Way Of Storing Large Asset: You are regularly advised to only store large asset on a hardware wallet (also sometimes referred to as cold wallet) cause this wallet is alot more secure than a regular hot wallet.
Cons of Using Hardware Wallet
1. Vulnerable To Human Error: Hardware wallet are not immune to human mistakes and can easily be stolen, misplaced or damaged. Although most hardware wallet manufacturer allows users to set a password in order to prevent unauthorized access.
2. Expensive To Replace: Replacing a missing or damaged hardware wallet requires buying a new one.