What is a PIN? Why is it useful?

The PIN code is composed by 4 or 5 figures and can be set as an additional security measure for your wallet. It is a unique code, linked to the device where the app is installed. The PIN is necessary to visualize your private key or authorize transactions, in order to protect your funds in case of loss or someone being able to gain control of your device. It is important to note that the wallet provider will never be aware of your PIN.