Smart objects connected to the Internet of Things present new possibilities for technological surveillance. This network of smart devices also poses a new challenge for a Fourth Amendment built around effects. The constitutional language protecting persons, houses, papers, and effects from unreasonable searches and seizures must confront this change. This Article addresses how a Fourth Amendment built on old-fashioned effects can address a new world where things are no longer just inactive, static objects, but objects that create and communicate data with other things.