A company that has called infringement for what it claims is patented contract tracing software likely faces a tough road to proving it, says Emory Law Professor Timothy Holbrook. Blyncsy seeks the equivalent of $1 per resident from states that have released or plan to release contact tracing apps. One of its 2019 patents describes ways to track "contagion" using Bluetooth, Wi-Fi, and cellular signals. "It was a little bit shocking that a patent of this breadth managed to get out," Holbrook said. While it refers to an abstract idea of tracking proximity, the patent doesn't include many specifics on implementation beyond common methods like Bluetooth and Wi-Fi. "Even dating apps rely on a similar concept," Holbrook said.