Brunei uses a National Registration Identity Card system, which is issued to all citizens aged 12 and over.  All citizens are issued with a unique NRIC Identity Card number.

Brunei issues three (3) types of national smart identity cards (SIC):

  1. Smart Identity Card (Yellow) - Citizens of Brunei Darussalam
  2. Smart Identity Card (Purple) - Permanent Residents of Brunei Darussalam
  3. Smart Identity Card (Green) - Foreigners staying in the country for a period of more than 3 months.

You can get more info here: