Could be defined as: "Hardware wallets store users’ private keys securely, by being offline.
Keys are stored within the microcontroller of the device, and cannot be exported in plaintext. Such wallets have the distinct advantage of being rather immune to potential viruses or hacks, which software or exchange wallets are considerably vulnerable to."
The advantage of ZENIQ Hub is that you have your own private keys on the device, so it works like a hardware wallet, and no one from ZENIQ has access to your private keys at any time.
There is no need to buy another device to store your coins, because the ZENIQ Hub has it all in one device.