Allows 6 key combinations (Q, A, Z, W, S, X, E, D, C, B, SPACE, TAB, ALT+L or V, CTRL+L or F, SHIFT+L & 4 directional keys) to be registered simultaneously. Inclusion of disable windows key and full signal lock key prevents accidental activation of the Windows Start function and enables full lock of the keyboard whilst not in use for easier cleaning and unintentional command.