Hong Kong Document of Identity for Visa Purposes
The Hong Kong Special Administrative Region Document of Identity for Visa Purposes (Chinese: 香港特別行政區簽證身份書) is a biometric travel document issued by the Hong Kong Immigration Department to residents of Hong Kong who are unable to obtain a national passport. It is usually valid for seven years.
Source: Wikipedia — Hong Kong Document of Identity for Visa Purposes (CC BY-SA 4.0)