webworkers can be used to fingerprint, running https://www.measurethat.net/Benchmarks/Show/6873/0/drawimage-and-getimagedata-on-canvas-vs-offscreencanvas or this code in https://jsfiddle.net
new Worker(URL.createObjectURL(new Blob(["c = new OffscreenCanvas(100, 1); d = c.getContext('2d'); console.log(d.getImageData)"], {type: 'application/javascript'})))
new Worker(URL.createObjectURL(new Blob(["console.log('hardwareConcurrency: ', self.navigator.hardwareConcurrency);"], {type: 'application/javascript'})))
only manages to catch
worker construct self.Worker
meanwhile worker has access to navigator and canvas. I tried to figure out how to proxy
self.CanvasRenderingContext2D.prototype.toDataURL
self.CanvasRenderingContext2D.prototype.toBlob
self.CanvasRenderingContext2D.prototype.getImageData
inside the worker, but I have trouble with scopes. Obviously window doesnt exist, but neither self nor WorkerGlobalScope contain CanvasRenderingContext2D :( Do you have any ideas?
webworkers can be used to fingerprint, running https://www.measurethat.net/Benchmarks/Show/6873/0/drawimage-and-getimagedata-on-canvas-vs-offscreencanvas or this code in https://jsfiddle.net
only manages to catch
meanwhile worker has access to navigator and canvas. I tried to figure out how to proxy
inside the worker, but I have trouble with scopes. Obviously window doesnt exist, but neither self nor WorkerGlobalScope contain CanvasRenderingContext2D :( Do you have any ideas?