I want to see this exact attack repeated based entirely on the fingerprints left on the device itself. It's an all glass surface and we leave fingerprints every

I want to see this exact attack repeated based entirely on the fingerprints left on the device itself. It's an all glass surface and we leave fingerprints everywhere, including on the device itself. It you are literally leaving the key all over the screen itself, this is pretty damning. I wouldn't be surprised if an entire photograph of all the partials all over the screen could be used to reconstruct one full fingerprint of the desired digit. Now that this type of security is on the iPhone, it is likely to become widespread, which will only further increase the value of improving attacks on this particular security measure.