Guidelines 05/2020 on Consent under Regulation 2016/679 (GDPR)
SECTION 3 ELEMENTS OF VALID CONSENT
11. Article 4(11) of the GDPR stipulates that consent of the data subject means any:
unambiguous indication of the data subject’s wishes by which he or she, by a statement or by a clear affirmative action, signifies agreement to the processing of personal data relating to him or her.