Explain precisely what will be collected, how it will be used, and what benefits or tradeoffs exist, before any tracking begins. Avoid vague categories and legalese. A concise, human explanation reduces anxiety and supports informed decisions, while still providing links to deeper information for those who want to examine details carefully.
Offer opt-in choices for distinct purposes rather than bundling disparate data uses together. Let people accept analytics but refuse marketing, or allow notifications without sharing location. Granularity honors different comfort levels, avoids coercion, and yields more reliable signals because each decision reflects a specific intention understood at the moment.