Ask HN: I bought Voltaren at the chemist, now Google shows me ads for it. Why?
Opt out of VISA marketing<p><a href="https://marketingreportoptout.visa.com/OPTOUT/request.do" rel="nofollow">https://marketingreportoptout.visa.com/OPTOUT/request.do</a><p>Second, disable GPS, and cellphone tower ID reporting (root needed.) So Google can't correlate you with sales records.<p>At the moment, there is no way to disable Google AGPS spying on the stock Android.<p>Third, block Google apps from reading your IMEI/IMSI/serial number, so they can't get AGPS data from your cellphone provider if it sells it.<p>Better, get a de-Googled ROM