We like to make sure that your account is completely secure against potential malicious intent. So, you will be required to create a code which will be used at the time of placing a trade - whenever you do it.It's similar to having an extra layer of authentication. When you are placing a 'buy' or 'sell' order, at the final step - after having entered the order quantity at the relevant price - the system will ask you to input your PIN for final authentication.

You can set your PIN by navigating to Account settings, available under the dropdown next to your initials under "Set/Reset PIN".