Question: How do you make tiny cameras to observe the internal body - without effecting its natural functions?

Clara Nellist answered on 19 Mar 2014:

Ever since the first computer was made, we’ve been able to make them smaller and smaller. This is because we’ve got better at storing data in smaller storage devices and at making computer chips in a more compact way.

So the same technology was used to make smaller cameras. Once they’re small enough, we can put them into a case, the size of a pill, which the patient can swallow. The material of the pill protects the camera from being digested from your body and because it’s small enough, it can pass all the way through the digestive track naturally and come out the same way the waste food does. Because this camera is so small, the patient doesn’t need to stay in the hospital. They just wear a receiver on their belt which collects the images sent wirelessly from the camera.