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The Hong Kong identity card (officially HKIC, commonly HKID) is an official identity document issued by the Immigration Department of Hong Kong. According to the Registration of Persons Ordinance (Cap. 177), all residents of age 11 or above who are living in Hong Kong for longer than 180 days must, within 30 days of either reaching the age of 11 or arriving in Hong Kong, register for an HKID.
However, generally they are considerably slower (typically by a factor 2–10) than fast, non-cryptographic random number generators. These include: Stream ciphers. Popular choices are Salsa20 or ChaCha (often with the number of rounds reduced to 8 for speed), ISAAC, HC-128 and RC4. Block ciphers in counter mode.
The identification number has 8-digit standard format: NNNNNNN (N), where N is a numeric digit 0–9. The first numeric digit N has special meaning, and it can be one of the following digits: '1', '5' or '7'. '1': The first-time date of issuance of ID card to the bearer was 1992 or later.
A personal identification number ( PIN ), PIN code, or sometimes redundantly a PIN number, is a numeric (sometimes alpha-numeric) passcode used in the process of authenticating a user accessing a system. The PIN has been the key to facilitating the private data exchange between different data-processing centers in computer networks for ...
A USB-pluggable hardware true random number generator. In computing, a hardware random number generator (HRNG), true random number generator (TRNG), non-deterministic random bit generator (NRBG), or physical random number generator is a device that generates random numbers from a physical process capable of producing entropy (in other words, the device always has access to a physical entropy ...
IMEI number - an example. The International Mobile Equipment Identity ( IMEI) [1] is a numeric identifier, usually unique, [2] [3] for 3GPP and iDEN mobile phones, as well as some satellite phones. It is usually found printed inside the battery compartment of the phone but can also be displayed on-screen on most phones by entering the MMI ...
A service number or roll number is an identification code used to identify a person within a large group. Service numbers are most often associated with the military; however, they also may be used in civilian organizations. National identification numbers may be seen as types of service numbers. The term "serial number" is often seen as a ...
To calculate the checksum, multiply the individual digits in the 10-digit identity number and 212121-212. The resulting products (a two digit product, such as 16, would be converted to 1 + 6) are added together. The checksum is the last digit of 10 minus the last digit in this sum (note that if the last digit of the sum is zero, the checksum is 0).