Time is the Key! Ecclesiastes 3:11 "He hath made every thing beautiful in his time: also he hath set the world in their heart, so that no man can find out the work that God maketh from the beginning to the end." God Changes Not ... But, Man Changes with Time.
Steampunk-ish timeclock. When you came into work, you'd put the pin in "your" number space and push it down. It would ring a bell and stamp a roll of paper (inside) that would show the time next to your number. Check out after work the same way.