The ornamental design for a device to increase foottraction, as shown and described.
FIG. 1 is a top plan view of a device to increase foot traction showing my
new design;
FIG. 2 is a front elevational view;
FIG. 3 is a bottom plan view; and,
FIG. 4 is a side elevational view showing the device in a position of use.
The broken line showing of a foot and shoe and the attaching means in FIG.
4 is for illustrative purposes only and forms no part of the claimed
design.