When you say 'browser bars' I am thinking of an address bar in browsers today. Is that what you are referring to?
I am thinking of something that does not interact with the user but captures some of their web usage based on their consent. Would love to share it with the community when its ready!
Nope, I mean browser bars from the early-mid 2000s. Comet Cursor, HotBar, and other adware companies that were the Groupon of their day. Lots of deal site plugins used these kinds of plugins to do a kind of rudimentary tracking. You got some..."thing"..and they would have this snippet of js that submitted your clicked urls to their servers. Same as it ever was.