With a view to successfully preventing and monitoring unauthorised movements of third-country nationals or stateless persons who do not have a right to stay in the Union and to taking the necessary measures for successfully enforcing effective return and readmission to third countries in accordance with Regulation (EU) Directive 2008/115/ECReturns Directive and in view of the right to protection of personal data, a period of five years should be considered necessary for the storage of biometric and alphanumeric data.