Here are the few reasons:
Identification of users
To consider and/or process your application to be our customer/user, we require a front and back photo of your NRIC at the sign-up page or creation of an account via MyInfo.
To prevent frauds
To prevent or investigate any fraud, unlawful activity or omission or misconduct, whether or not there is a suspicion of the aforementioned; dealing with and/or investigating complaints.
To comply with or as required by any applicable law, governmental or regulatory requirements of any jurisdiction applicable to us.