MediaWiki:Weirdgloop-checkuser-tempaccount-enable-preference-description

By turning on these settings, you agree to follow Weird Gloop's privacy policy.

You must not access, use or disclose information about temporary account IP addresses except if it is reasonably necessary for the investigation of or enforcement against vandalism, abuse, spam, harassment, disruptive behavior, and other violations of community policies. If you do share the information with others, you must be sensitive about where and how you do that, and you should remove the information when it is no longer reasonably necessary for others to see it.

Other users with access to temporary account IPs will be able to see that you have turned on this preference.