5 – If I lose or damage all cards, NVC vault can restore my private keys?

The process of recording the private key on the NFC card is an offline process, so no one can access that information. That’s what makes this process safe. Each user is responsible for keeping their cards safe. The greater the number of NFC cards, the greater the security, as long as they are stored in different places. The custody of the cards and private keys is the sole responsibility of the customer.