How to check for rapid key presses?

I’ve finally created a movement script I like, but now i’d like to add another little feature to it.

I’m just wondering if there was any way to make my character move at a fixed rate based on multiple key presses.

ex. I rapidly hit my forward button, W. I want the script to notice when I have pressed the key 4 times within 1 second.

Is this possible? And how would I go about doing this?

You do something like:

...

public yourClass : Monobehavior
{
   public float firstWpress=0;
   public int count=0;

   void Update()
   {
      // Check for the W key.
      if (Input.GetKeyDown(KeyCode.W))
      {
         // The current time
         var currentTime=Time.time;
         // Is this the first time W was pressed?
         if (count==0)
            {
            firstWpress=Time.time; // Save the time of first
            }
         count++; // increase the key count.
         if (count==4) // has the key been pressed 4 times?
          {
           count=0; // Reset the counter
           if (currentTime-firstWpress<1) // was it under 1 second?
           { 
             // It was pressed 4 times within a second
             // Do your logic here.
           }
          }
         if (currentTime-firstWpress>1) // Reset the counter if it's been longer that 1 second.
         {
          count=0;
         }

       }

    }
}

I haven’t tried the code, but I hope that would give you some idea.