Meaning you should know what's being collected, you should be able to say, "I don't want that to be collected," in simple language, not in a 12-page legal agreement that you cannot comprehend.
Deberías saber qué es lo que se recolecta, deberías poder decir, "no quiero que se recolecte esto", en un lenguaje simple, no en un documento legal indescifrable de 12 páginas.