This is not 100% clear. The Austrian DPA has declared it legal, which is why many are doing it: https://www.lexology.com/library/detail.aspx?g=6cdf29db-aa57-485

This is not 100% clear. The Austrian DPA has declared it legal, which is why many are doing it: https://www.lexology.com/library/detail.aspx?g=6cdf29db-aa57-485b-a86d-d1e63ce732d1 https://www.lexology.com/library/detail.aspx?g=6cdf29db-aa57... This is currently being contested by NOYB.