ALEXANDRIA, Va., May 26 -- United States Patent no. 12,635,949, issued on May 26, was assigned to Whoop Inc. (Boston).

"Monitoring fit of wearable devices" was invented by Mostafa Ghannad-Rezaie (Malden, Mass.) and Behnoosh Tavakoli (Needham, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Tightness of a wearable device can be evaluated through direct observations of how the device responds to a physical stimulus. For example, by applying a varying pattern of vibrations such as a CHIRP signal with a haptic output element or the like to a device strapped to a wrist or other body part, the mechanical and/or optical response of the device can be measured to infer the amount of tension that is retaining the...