I have a severe allergy to peanuts. Severe enough that within 15 minutes of eating one my airway will begin to close and my heart will begin to stop. It's critically important that whenever I am travelling to a place where peanuts are common that I know if I can or cannot eat somewhere, and to get help should I need it. All of this has to cross language barriers absolutely perfectly.
This card, or in my current case, cards, is how I do that. I spent a lot of time refining these cards to accomplish two very specific tasks. This is the second revision of these cards, after my first when I visited Taiwan in 2019.