TL;DR: GDPR (General Data Protection Regulation) of the EU requires by law that every website operating or having audience in the EU region should let users know how they are being tracked while providing option for users to disable and mandate their rights to receive data being tracked.
Thank me later. But now let’s get into detail of all the buzz with GDPR. You now have responsibility to protect or address PII (Personally Identifiable Information) of your visitors and customers. If any customer asks for their data that’s being collected at your end, you should produce it, share with him and be able to delete permanently from your system or the server.
Using WordPress? Here is how WordPress Akismet – the spam control solution that Automattic runs – has in for updated Privacy with compliance to the GDPR. Luckily, all WordPress users now can enable GDPR notifications for user tracking just by enabling the feature provided by Akismet itself.
WordPress Akismet & Privacy.
So many companies are doing so.