A developer published a Mac utility called Numpad with the simple idea of turning a trackpad into a numeric keypad. The repository includes Swift package files and tests. This is an amusingly direct response to the missing number pad on many Mac keyboards.
For someone who uses Stream Deck shortcuts and numeric input in creative applications, the real test is ergonomics: can it be activated without accidental touches, and does it help in a CAD or spreadsheet workflow? Do not assume it works on every macOS version or trackpad without reading the project requirements.
Even if the utility is too experimental for daily use, its source is a useful miniature case study in native Mac input handling. A ten-minute code review may generate ideas for a better custom controller.
What to do: Read the requirements and test whether trackpad numeric input helps one repetitive task.