Unik meaning1/7/2023 ![]() ![]() ![]() A serial number is assigned based on the order of entry into the system, with the highest number assigned to the most recent enrollee.Ĭoded. A random number (technically a “pseudo” random number) is generated using mathematical algorithms and contains no information about the person. In any system, ID numbers can take one of three formats: The structure of an ID number-including its format and length-require careful consideration of country context and privacy concerns. In addition to evaluating the potential use of the ID number outside of record management, practitioners must also determine the structure of the number itself, which has implications for the system’s ability to protect privacy and personal data. This may include, for example, using tokenized versions of the identity number-discussed below and in Box 21 on India’s virtual ID system-rather than the original ID number. This has happened extensively in the US and UK, where-in the absence of national ID systems-social security numbers (SSNs) have become a de facto authenticator used to prove that a person is who they claim to be for services that lack a stronger authentication mechanism (e.g., asking people to provide the last four digits of their SSN when logging into online banking).Īlongside policy, regulatory, and legal controls that dictate the appropriate use of identifiers in order to avoid this type of function creep and its associated risks, technical measures should be adopted to obscure the ID number when it is used for authentication or other purposes. This risk is even higher when ID numbers are used as authenticators in addition to identifiers-i.e., when they are treated as a user name (identifier) in some systems, and a password (authenticator) in others. The more these numbers are used across multiple systems, the higher the risks that they can be used to correlate information about a person. Like user names, ID numbers can only be considered credentials in the weak sense, in that they are often widely known or easily discovered. However, there are certain limitations to this use including the need for connectivity and some people’s preferences for having physical credentials for in-person authentication.īeyond usability, there are also important data protection concerns with using a “raw” (i.e., the root or original) ID numbers for authentication. As discussed above in the case of India, using a unique ID number as an identifier during authentication could eliminate the need for physical credentials. In this role, they serve a similar function to that of a username: they are information that a person presents to a relying party-along with one or more authenticators such as biometrics, passwords, OTPs, PINs-to say “this is who I am.” The system then uses the ID number (or username) to look up the person’s record (or account) in a database and then verify the authenticators they have provided against that record. In addition to their function as back-end identifiers, however, ID numbers have been used for authentication as a type of credential. The number-generating process ensures that no two people within the system share the same number andĪ deduplication process ensures that the same person does not have multiple identity records or numbers (i.e., that they are unique in the database). In the context of foundational systems, ID numbers are considered to be “unique” when: They are issued automatically when a person enrolls, and their default function is to serve as a record locater or index within the system to facilitate back-end operations such as linking different tables within a database. ![]() In any ID system, identifying numbers-including unique ID numbers (UINs), also sometimes known as national ID numbers (NINs)-are the most basic type of identifier.
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