Hardware wallets accounted for the largest (~76% in terms of value; ~98% in terms of volume) share of the blockchain devices market mainly due to the ability of such wallets to store the private keys of users without the risk of getting them exposed to malicious threats over the Internet. Hardware wallets are often referred to as cold storage because they are not connected to the Internet. When connected to a computer, a hardware wallet does not share the private keys with the computer or over the Internet. The only transaction that takes place between the hardware wallet and the computer is of an unsigned and signed contract.
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