this post was submitted on 04 Oct 2023
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Programming.dev Fingerprint API calls - Pastebin.com (pastebin.com)
submitted 1 year ago by mirkl to c/meta
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Getting Fingerprint Detector reports about high number of fingerprinting API calls on Programming.dev instance.

Is there a reason for that? Not getting it on others instances. Report

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[–] mirkl 4 points 1 year ago* (last edited 1 year ago) (1 children)

It happens on 1st page load, then PWA create a lot of cached data.

It doesn't happen on other lemmy instances, maybe some, but you can check for example lemmy.ml.

You can check using JShelter Firefox addon. So basically application calls a lot of JS API calls to identify system capabilities even if they are not required by PWA. Results of such calls could be used to fingerprint your browser.

Maybe it is some JS library that checks capabilities to load polyfills?

vs

[–] snowe 1 points 1 year ago

Can you message me in a few days about this? I’m out of town and won’t have time to look into it for a least a few days but I really don’t like trackers and I’m not sure why programming.dev would have any trackers cuz I most definitely didn’t add them. (I run Firefox with ublock matrix, several other tracker prevention mechanisms including Firefox’s built in fingerprinting blocking, sometimes I switch to Orion which also has good tracking blocking).