There’s a decent chance that slaves have handled something you own. The coltan in your smartphone. The beans in that coffee you’re sipping. The cotton in the underwear you’re sitting in. All around the world, forced labor is used to mine and harvest the raw materials that goes up the supply chain and into the products you own. So how many slaves do you have working for you? This interactive, beautifully designed, 11-question survey calculates it for you.