A number of ingestible technologies have been developed for the diagnosis of gastrointestinal (GI) diseases, including the use of conventional tools, such as endoscopy, radiological imaging, or biochemical tests. Ingestible diagnostics are particularly useful for the exploration of the small bowelⁱⁱ, since gastroscopy can only reach a limited area of the small intestine and alternative methods with further reach, such as balloon enteroscopy, require specific expertise and infrastructure.