The ornamental design for a finger mounted electronicdevice, as shown and described.
FIG. 1 is a left side view of a finger mounted electronic device, the right side being a mirror image;
FIG. 2 is a rear left perspective view thereof;
FIG. 3 is a front left perspective view thereof;
FIG. 4 is a bottom left perspective view thereof;
FIG. 5 is a top perspective view thereof;
FIG. 6 is a front left perspective view of the design shown in use; and,
FIG. 7 is a cross section view of the design shown in use.
The broken lines shown within shaded areas represent unclaimed surface ornamentation. All other broken lines in the Figures show portions of the electronic device that form no part of the claimed design.