With that method, you won't be able to distinguish between the many different devices using the same browser at same resolution behind one IP. In the era of CG

With that method, you won't be able to distinguish between the many different devices using the same browser at same resolution behind one IP. In the era of CGNAT that means you now only know which city I'm from and whether I use Chrome or Firefox. People mostly use browsers in maximized and resolutions are relatively standardized nowadays. Compared to the data you get from canvas and webgl, that's much less unique.