For detailed information about what data we process, for what purpose, for how long, and our basis for doing so under the GDPR, see Appendix B, Record of Data Processing. To object to processing, or to request data deletion or access, contact our Data Protection Officer at privacy@xtramath.org.</p>Cookies and Local Storage<p> <em>XtraMath intends to discontinue the use of cookies by August 1, 2018.</em> </p> <p>XtraMath uses two types of cookies.