I'm a product designer, a couple of years back (2017) I worked with a company in brazil that sells fruits/vegetables, they wanted to design an ERP for their end-to-end process, but there was an issue, most of the sellers that worked in the market dealing with customers were semi-illiterate, we created an interface that was made mostly of illustrations for example if you are selling a tomato, the image would show a tomato, allowing those employees to use a software without having the need to be able to read! Was super fun and i'm proud of this project till now