Various embodiments provide a wellness tracking device with a base plate that may be utilized as a combination electrode by a variety of sensors. The base plate may be a multi-material electrode that includes a conductor and a transparent or semi-transparent material to enable optical sensing. In certain embodiments, the base plate supports a plurality of different sensors, which may selectively utilize the base plate as an electrode.

According to an aspect, a detection device includes: a light source device including point light sources; a light-transmitting placement substrate on which an object to be detected is placed; an optical filter that is located so as to overlap one side in the first direction of the placement substrate and has divided areas divided in a second direction; an optical sensor that is located so as to overlap one side in the first direction of the optical filter and includes photodetection elements arranged in a planar configuration. A first point light source of the point light sources overlaps a first divided area of the divided areas of the optical filter as viewed from the first direction. A first emitted light waveband of emitted light emitted from the first point light source overlaps a first transmitted light waveband of transmitted light transmitted through the first divided area.