Police lifted DNA from her trash and charged her with a baby's 1981 killing. She says that was illegal.

"Elizabeth Joh, a professor at the University of California, Davis School of Law, who studies criminal procedure and police surveillance, said that as covert collection of DNA becomes cheaper and easier, there need to be more rules — from the courts or lawmakers — covering it.

“There is basically nothing regulating or guiding the police on what to do other than their own internal guidelines,” Joh said."