Described is distinguishing between input mechanisms to determine which input mechanism was used to activate a start menu. A start menu is selected that corresponds to the input mechanism that was used to activate it. Further data corresponding to start menu interaction is received, and action is taken via based on the further interaction. For example, upon detecting activation of a start menu, how the start menu was activated from among activation types is used to present a first start menu/behavior for a first activation type, which may differ from a second start menu/behavior activated via a second activation type. For example, a determination may be made as to whether a start menu was invoked via a pointing device or via keyboard; when via keyboard, a search entry region may be provided, by which a user may directly enter search criteria via the keyboard.