Oura thinks your ring might eventually be able to give you a heads-up before a migraine hits. A new patent shows how it could use things like sleep, temperature and other ring data to work out when one may be coming. The application, US 2026/0248448 A1, was published on August 27 under the title “Techniques for migraine detection using a wearable device.” It is a continuation of earlier work rather than a completely new project, but the newly pu…