We require only two types of documents for verification:
Identity - NRIC, FIN, 11B (essentially, only Singapore-government issued residency-based documents). Please note that passports or licenses, even if issued in Singapore, are NOT accepted.
Proof of Address - Singapore-based bank statement or utility bill or Government-issued letter. Please note that Telco bills and letters from insurance companies are NOT accepted.
A photo of yourself (selfie) with your identity card is completely optional, but highly recommend that you submit. You can read more about it here.