Katelin Eunjoo Seo v. State of Indiana

Summary

The Indiana Supreme Court held that compelling Seo to unlock her iPhone would violate the Fifth Amendment because unlocking the device would communicate that she knew the password, that files existed, and that she possessed them. The State failed to establish that these facts were a foregone conclusion, because it did not identify particular files whose existence or possession it already knew. The court therefore reversed the contempt order and remanded with instructions to dismiss the citation.