Co-Dex.eu training

Coding refers to the assignment of a unique ID number to each individual, e.g. in the context of a specific database. The use of aliases is a form of pseudonymisation, in the sense that a specific identifier (usually the individual's full name) is substituted by an alias (pseudonym). The initials are a type of alias that is extracted from the full name of the individual. Like in the case of unique identifiers, codes and aliases can be used to identify the individual as long as it is possible to link them to a reference database (e.g. linking the code/alias to the full name of a particular person) When identification is based on coding or use of aliases:

• EI=0,25 (Negligible) when the code/alias does not reveal and cannot be linked to any other personal data about the individual unless access to the reference database is obtained.
• EI=0,75 (Significant) when the alias reveals some data about the individual (e.g. first name) and is linked to other personal data (e.g. the individual's email address).
• EI=1 (Maximum) when the alias reveals the individual's full name or data from the reference database are also available.