A system for forming at least a portion of a wearable device (204; 900), comprising: a base plate forming a bottom portion of a wearable device (204; 900), comprising: a plurality of charging pins extending through a thickness of the base plate , the charging pins extending normal to a first surface of the base plate by a first distance; a plurality of openings formed through the thickness of the base plate , the plurality of openings arranged at a central area of the base plate ; a plurality of panes , wherein a pane of the plurality of panes is arranged within a respective opening of the plurality of openings proximate a second surface opposite the first surface of the base plate , the plurality of panes being at least semi-transparent and formed from a material different than a material of the base plate ; and a plurality of recesses formed on the first surface , the recesses having a lower elevation than a proximate first surface location, at least one recesses of the plurality of recesses surrounding an opening of the plurality of openings ; a plurality of sensors (602; 700) coupled to the base plate , the plurality of sensors (602; 700) comprising at least three sensors, each sensor of the plurality of sensors (602; 700) having a different detection signal, wherein at least two of the at least three sensors utilize the base plate as an electrode. a base plate forming a bottom portion of a wearable device (204; 900), comprising: a plurality of charging pins extending through a thickness of the base plate , the charging pins extending normal to a first surface of the base plate by a first distance; a plurality of openings formed through the thickness of the base plate , the plurality of openings arranged at a central area of the base plate ; a plurality of panes , wherein a pane of the plurality of panes is arranged within a respective opening of the plurality of openings proximate a second surface opposite the first surface of the base plate , the plurality of panes being at least semi-transparent and formed from a material different than a material of the base plate ; and a plurality of recesses formed on the first surface , the recesses having a lower elevation than a proximate first surface location, at least one recesses of the plurality of recesses surrounding an opening of the plurality of openings ; a plurality of charging pins extending through a thickness of the base plate , the charging pins extending normal to a first surface of the base plate by a first distance; a plurality of openings formed through the thickness of the base plate , the plurality of openings arranged at a central area of the base plate ; a plurality of panes , wherein a pane of the plurality of panes is arranged within a respective opening of the plurality of openings proximate a second surface opposite the first surface of the base plate , the plurality of panes being at least semi-transparent and formed from a material different than a material of the base plate ; and a plurality of recesses formed on the first surface , the recesses having a lower elevation than a proximate first surface location, at least one recesses of the plurality of recesses surrounding an opening of the plurality of openings ; a plurality of sensors (602; 700) coupled to the base plate , the plurality of sensors (602; 700) comprising at least three sensors, each sensor of the plurality of sensors (602; 700) having a different detection signal, wherein at least two of the at least three sensors utilize the base plate as an electrode. <EOS>