Civil Service Personnel Rules Rule 279

279. In respect of the record of prominent features of the service personnel:
(a) the fingerprints of the left fingers shall be recorded in the service book. A separate sheet on which the finger prints are taken shall not be attached to the service book;
(b) in the space where the prominent features are to be recorded, the permanent prominent features such as moles, scars, or easily seen or recognized features shall be recorded. Indistinguishable features such as skin colour and face shape shall not be recorded.