This is a silly knickknack intended to promote justpark.com. It doesn't work, and even if you account for differences in other variables (mouse vs keyboard, ren

This is a silly knickknack intended to promote justpark.com. It doesn't work, and even if you account for differences in other variables (mouse vs keyboard, rendering speed, etc.), it probably can't work reliably given the variation in reaction times between members of the same cohort.