That BBC article omits one important detail about this issue. BBC gives the impression that a problematic screen protector is a master key with which anything goes once you've installed it. However, as SamMobile points out (https://www.sammobile.com/news/majo...print-flaw-will-be-fixed-with-software-update), you'll need to install a flawed protector and register a valid fingerprint when the problematic protector is installed. Thanks to the problematic screen protector's structure, the reader scans the protectors pattern more than the finger itself, thus making all fingers look the same from its point of view.
So if you've registered your fingerprints with an official Samsung protector on or a naked screen, just applying a cheap protector won't suddenly let anyone bypass the reader just like that.
Whoa. It seems like I was wrong and there actually are some cases that can act as a master key (unless the videos here have been doctored):
So if the video above is valid, this is looking like a huge flaw from Samsung. I hope a fix won't take too long.