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[Solved] How would you approach creating a scratch card like google pay?.create a box with 2 layers one is the content, the other overlay image and then you free hand draw on that using a transparent color. Is this a valid approach?.

In case anyone is interested <https://github.com/V9vek/ScratchCardEffect>. The idea is to draw the overlay image and then use the gesture touch and move as path and use clip path ( difference) to draw the content  (reveal content) behind. I am not sure if there is a better way.