- Compliance with any relevant privacy laws
- A statement that says data tracking is handled by a third party (i.e. Google)
It can also be helpful to mention that you will not collect any personally identifiable information, and that users have the opportunity to opt out of tracking at any time. You can NOT attempt to circumvent their opt-out, either.
Please note: This post is not intended to act as legal advice. If you have legal questions about privacy policies and the usage of users’ data, please contact a lawyer.