Coldlar is a blockchain assets security solution, which can guarantee the digital assets" private keys that are based on digital signature will never ever connect to Internet. This mechanism eliminates the risk of private keys are stolen by hackers. Coldlar are equipped with hardware wallet and APP together, the hardware wallet never ever connect to Internet, they transmit data through QR code.
This is APP, no relation to private keys, can connect to Internet anytime anywhere. The core function of APP is to view the balance for each coin, and it also send the transaction information that are created on wallet to blockchain network.