Medicine is more an art than a science, doctors are the first to admit, not just because so much remains unknown about the human body, but also because patients often fail to provide relevant details or follow the doctor’s orders.

Which explains the strong appeal of digitizing pills so that they register when the patient takes them and including Internet-enabled medical sensors in medical devices.

In a recent paper published in Proceedings of the National Academy of Sciences, Bettinger documents that an edible battery made from the pigment of cuttlefish — sea creatures related to squid — can discharge 10 microamperes of electricity for a period of five hours, with an ideal performance of 24 hours, as long as something ingested is likely to remain in the body.

Via Singularity Hub for the full article.