Integrated user interface system for user seat

FIG. 1 is a detail view illustrating an embodiment of a new and ornamental design for an integrated user interface system for installation at an armrest portion of a selected seat, wherein selected interface elements on the armrest portion form a trackball-like interface;

FIG. 2 is a detail view illustrating the new and ornamental design for the integrated user interface system of FIG. 1 , wherein the selected interface elements become apparent when a user hand approaches, and becomes proximate to, the user interface system;

FIG. 3 is a side view illustrating an embodiment of the new and ornamental design for the integrated user interface system of FIG. 2 , wherein the selected interface elements form a trackball-like interface having a domed contour; and,

FIG. 4 is a side view illustrating an alternative embodiment of the new and ornamental design for the integrated user interface system of FIG. 2 , wherein the selected interface elements form a trackball-like interface having a flat contour.