Biometric passports cannot be modified due to the "write once" policy by ICAO.A new passport is valid for a total period of five years.Singapore's passport is a favourite target for counterfeiters, due to the relatively liberal visa requirements for Singaporean travellers, and the tendency for immigration to clear Singaporean passport holders more quickly.The first version of the modern Singapore passport was introduced on 20 June 1966, replacing the Singapore Provisional Passport issued from 17 August 1965.Dual citizenship is strictly prohibited by the Singapore government.A dual citizen may have acquired citizenship by birth in a foreign country, by descent from a foreign citizen parent, or by registration.The Singapore passport is a travel document issued to the citizens of the Republic of Singapore.It is issued by the Immigration and Checkpoints Authority of Singapore.
The biometric passport is valid for 5 years for first time applicants, compared with 10 years for previously issued passports without biometric features.
To travel overseas, a passport must be valid for at least six months.
Since 15 August 2006, all newly issued Singaporean passports contain biometric features (Bio Pass).
Singaporean passports are bright red in colour, with the words "REPUBLIC OF SINGAPORE" inscribed at the top of the front cover, and the coat of arms of Singapore emblazoned in the centre of the front cover.
The motto and the title of the national anthem of Singapore, Majulah Singapura, is inscribed on the scroll of the coat of arms, whilst the word "PASSPORT" is inscribed below.