An electrical connector assembly includes an electrical connector with an insulative housing and a pick-up cap assembled to the electrical connector. The tines have tips remote from the base, and are formed of or include material in which a magnetic field can be induced. An objective function using scaling factors to ensure sparsity of features may be iteratively minimized, and features may be retained and added until a small set of features stabilizes. A closure member is disposed in the housing and is operable by the coil assembly. A central controller then random selects Bingo numbers, one at a time, and the first player to fill in a Bingo card wins the bonus game and an award. The outer layer has a characteristic matt surface and characteristic optical properties and has good suitability for use as a packaging film or for industrial application.