Abstract: Systems, devices, and methods for optimizing a physiological measurement are described herein. A system may include a wearable band that is wearable by a subject, a user device attached to the wearable band, and a measurement device configured to the physiological measurement. The user device may include a first communication device and a user interface. The measurement device may include a hollow housing, a processing device disposed within the housing, an elastic coupling member disposed within the housing, a physiological sensor coupled to the housing by the elastic coupling member, and a second communication device. The physiological sensor may take the physiological measurement and communicate the physiological measurement to the user device. The user interface may display the physiological measurement to the subject. The physiological measurement device and the user device may be attached to the same wearable band that is worn by the subject.

Abstract: A mobile phone holder that mounts a mobile phone on an appendage such as a limb of a user, an arm of a chair, and the like is disclosed. The mobile phone holder comprises of a cradle having a first arm and a second arm; an elongated member; and a supporter having a first curved member and a second curved member.