Trezor was developed by Satoshilabs and is currently priced at 99 USD. It is USB dongle designed for adding extra authentication in sending bitcoins.
Trezor is designed to be used on any computers and is impermeable to keyloggers and any vector attack. So however unsafe your computer is, there is no way for attackers to get your private key.
In addition, Trezor does not use standard random algorithms. Instead, it uses deterministic signatures and various different sources in generating the ranfom seed.
Trezor offers minimal interface to users for fast processing of transactions. A PIN is required to access the wallet and transactions are approved on the device. For users’ convenience, Trezor now supports Electrum 2.0 and Multibit HD wallets.
Ledger Wallet Nano
Ledger Nano is also a deterministic multisignature wallet that uses second security layer as Trezor does. This type of security does not allow any attack vectors that steals private keys. This security is in form of a security card which is used to sign in every purchase, together with the codes that needs to be entered by the user.
Hardware wise, Ledger wallet nano is a smartcard based compact USB device about the size of a flash drive. When it comes to security, Ledger Nano, although physically similar to flash drives, does not use NAND memory used by most USB drives. Ledger Nano was offered a thirty-year guarantee by the developer of EEPROM memory used in the CC EAL5+ smartcard on data retention and 500,000 read or write cycles.
Installing Ledger Nano is also easy with the use of a Google Chrome application. Plug the Ledger device into a USB port and get access to my.ledgerwallet.com to install the Chrome app. The Chrome app then is connected to the Ledger’s API server which has access to the blockchain.
CoolWallet is considered as the most convenient Bitcoin cold storage device. It can be used in storing, sending and spending Bitcoin. It is designed as a card-like device which is safe and easy to use. It has E-paper display, bends up to 15 degrees and is waterproof. Private keys are kept securely in the card without allowing it to be exposed in any situation.
It features an HD wallet which allows until five accounts with almost unlimited bitcoin addresses. It also uses seed in restoring accounts. Private keys are not stored in the cloud and only the user has the access on the private keys.
CoolWallet is the first wireless cold storage device. It uses Tap Tap function in sending OTP by tapping the card twice. It has also a Watchdog feature which alerts the user when the users phone and CoolWallet is apart at a certain distance or one to ten meters apart.
In comparison, each type of Bitcoin freewallet offers its own different advantages to Bitcoin wallet users and each wallet providers gives unique and useful features and cool stuffs to entice users to try them. There are a lot of ways to buy and sell stuff using bitcoin nowadays. In the end, it depends upon the users’ preferences according to how do they use their Bitcoins. So we did recommend on the list above, the best Bitcoin wallets on each type of to help you choose the best that suits you.