A new website and mobile app looks at your purchases and determines the amount of forced labor that’s gone into everything you own. The number may surprise you.

It’s not easy to be a socially responsible consumer. Even if you buy mostly local products and diligently keep track of corporate environmental footprints, you may still be leaving a trail of slaves in your wake. After all, who do you think is digging up the minerals in your smartphone or picking the cotton for your T-shirts? Slavery Footprint, a new website and mobile app that launched (the 149th anniversary of the announcement of the Emancipation Proclamation) can tell you approximately how many slaves have pitched in to make the goods you enjoy on a daily basis.

Take the quiz to discover your slavery footprint.