diff --git a/test/UserInputTiming.ahk b/test/UserInputTiming.ahk
new file mode 100644
index 0000000..8b06fce
--- /dev/null
+++ b/test/UserInputTiming.ahk
@@ -0,0 +1,31 @@
+
+/*
+ * Measure the minimum delay between button presses.
+ * 
+ * Minimum observed delay: 80ms (2012/11/23)
+ */
+
+
+Start_Day:=A_YDay
+Last_Time:= (((((((A_YDay - Start_Day) * 24 ) + A_Hour ) * 60) + A_Min) * 60) + A_Sec) * 1000 + A_MSec
+Min_Delay:=1000000
+
+
+MsgBox, ms base: %Last_Time%
+
+Return
+
+
+r::
+	Cur_Time := (((((((A_YDay - Start_Day) * 24 ) + A_Hour ) * 60) + A_Min) * 60) + A_Sec) * 1000 + A_MSec
+	Difference := Cur_Time - Last_Time
+
+	If (Difference < Min_Delay)
+		Min_Delay := Difference
+
+	Last_Time := Cur_Time
+	Return
+
+q::
+	MsgBox, Min_Delay: %Min_Delay%
+	ExitApp