The Fn key began as a practical solution in 1984 with IBM's PCjr, designed to resurrect missing keys on a compact keyboard. The 21-key reduction from the original PC meant keys like Scroll Lock had to be simulated through combinations like FnS. IBM's clever color-coding made the system intuitive, with FnP mimicking PrtSc and Fn6 representing F6.

As laptops emerged, manufacturers adopted Fn to compensate for space constraints. Toshiba, HP, Zenith and others used it to simulate numeric keypads, function keys, and computer operations. The key evolved beyond its original purpose, controlling volume, brightness, and display switching through combinations with function keys. By the 1990s, Fn became standardized for resurrecting traditional keys and managing internal computer functions.

Microsoft's introduction of the Windows key in the mid-1990s created new complexity, positioning it between Ctrl and Alt on their Natural Keyboard. Today's Apple's Fn/Globe key represents the latest evolution of this modifier key chaos, leaving users confused about whether it controls function keys or accesses the emoji picker. After 40 years of modifier key evolution from typewriters to teletypes to modern laptops, the Fn key's journey from simple resurrector to multifunctional controller suggests Apple may be reinventing the wheel once again.