> The Wasm-based scanner was able to process images of the barcode at 50 Frames per Second (FPS), compared to about 1FPS in an earlier JavaScript-based scanner eBay had tested
> The team were initially puzzled why the same C++ code that worked in about 100% of cases when compiled to native code for Android and iOS apps was failing when compiled to Wasm to run in the browser. It eventually emerged that these native apps were able to bypass problems with image quality using platform-specific APIs that allowed for autofocus and other features.