GDPR and CCPA affect mobile advertising in several ways. First, they require you to obtain valid consent from your users before collecting, using, or sharing their personal data for advertising purposes. This means you need to provide clear and transparent information about what data you collect, why, how, and with whom you share it, and how users can exercise their rights. You also need to use a consent management platform (CMP) that allows users to easily manage their preferences and revoke their consent at any time. Second, they limit the use of certain identifiers, such as cookies, device IDs, or IP addresses, that are commonly used to track and target users across apps and websites. This means you need to respect the user's choice to opt-out of tracking or use alternative methods, such as contextual or first-party data, to deliver relevant ads. Third, they impose strict obligations on how you store, secure, and transfer the personal data you collect. This means you need to implement appropriate technical and organizational measures to protect the data from unauthorized access, use, or disclosure, and ensure that any third-party partners you work with comply with the same standards.