The following tweet has a video of a soap dispenser that apparently was only designed to work for people with light-colored skin.1
While I can't see the video, this reminded me of major cases that happened during covid-19 with a similar situation. Current oxygen readers read O2 levels in blood by shining a light through the skin, however, this works differently for brown and black individuals. This caused them to have higher oxygen readings than they actually did, and created dangerous situations where someone's oxygen levels were too low while in the hospital for covid-19 symptom management, and lead to a few deaths. Skin color is a huge problem in the medical industry, another example being common textbooks used to teach skin conditions only showing examples of how those conditions look on white skin, even when it appears completely differently on BIPOC. Issues like this have only been brought into the light very recently in the grand scheme of things, and we still have a very long way to go.