I develop a web app with flutter. I want to share variable between two browser at the same system. I mean when I run project on chrome (i.e. http://localhost:58284) and I increment a counter value, then i open (http://localhost:58284/#/) in firefox browser, i see the counter value in firefox. Note that, I don't want to use api, firebase db (or any online storage).
First I want to know if this purpose is possible. If yes, how.
A real example of this purpose is Youtube
. When I watch a video until the half of video and I want to watch remind of this video on another system, it remembers how much I watched the video. Does it use online api to save how much I watched?