Here's how those Bacterial spies work...since TechBandits probably don't even know what a tape recorder is! Microscopic data recorder takes advantage of CRISPR to monitor biological surroundings.

Genetically Modified Spy Bacteria! Researchers have equipped gut bacteria with data logger functionality as a way of monitoring which genes are active in the bacteria. These microorganisms could one day offer a noninvasive means of diagnosing disease or assessing the impact of a diet on health.