Highlights USB-C port Unlimited storage: no limit on the size of Bitcoin transactions Extended multisig capabilities: Processing of larger and more complex transactions. NFC-V compatible: Tap-to-Pay Protective sliding cover shields the screen and keyboard Two Secure Elements for even more security USB virtual disk mode: Simulates a USB stick New features New features NFC-V compatibility NFC is the technology behind tap-to-pay and keyless entry. The NFC function is deactivated by default and can be made permanently unusable by cutting a conductor track on the circuit board. No other functions use the destructible conductor track. Those who choose to activate NFC can use it for all PSBT (Partially Signed Bitcoin Transactions), address sharing and similar data. USB virtual disk mode Another option for data transfer is Virtual Disk Mode: connect the Mk4 to a computer or cell phone and the computer will see the Mk4 as a 4MB USB stick. Using your COLDCARD Mk4 with web browsers and other PSBT sources is effortless as you can save directly to your Mk4. Increased performance and safety The Mk4 takes advantage of its new Hardware to enable faster and more secure transactions. Two Secure Elements, two manufacturers - minimizes the risk of unknown security vulnerabilities.
1. why a Hardware-Wallet? When you own cryptocurrencies, you actually own a private key with which you can access your coins. You must keep this key absolutely safe. 2. what is a Hardware-Wallet? Hardware-Wallets store access to your private key (and thus to the cryptocurrencies) offline, which means hackers cannot get at it - even if your device is connected to your computer. 3. to what extent are your cryptos more secure with Hardware Wallets ? The "ownership" of cryptocurrencies is not about the storage location of the coins, but about access control. With Hardware Wallets nobody (not even us) can access your coins except you.
