Bodily gases are typically embarrassing. But for doctors who want help diagnosing gut disorders, detecting these gases inside the body could be beneficial. Now, a team of Australian researchers is testing an electronic pill that senses certain gases in real time as it travels through the body (Nat. Electron. 2018, DOI: 10.1038/s41928-017-0004-x). This sensor is the latest ingestible device vying for a place on the market and on gastroenterologists’ roster of diagnostic tools.