# Identification components

| [tGenKey](https://help.qlik.com/talend/r/en-US/7.2/components/identification/tgenkey) | Generates a functional key from the input columns, by applying different types of<br>algorithms on each column and grouping the computed results in one key, then outputs this<br>key with the input columns. |
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| [tAddCRCRow](https://help.qlik.com/talend/r/en-US/7.2/components/identification/taddcrcrow) | Provides a unique ID which helps improving the quality of processed<br>data. CRC stands for Cyclical Redundancy Checking. |