The colmeia group recently installed their Caffeine Viewer project where they hacked their coffee maker to log their “insane coffee consumption” in real-time. Every time a person presses a button on the coffee maker data are logged, but there’s a slight twist – the data are available to everyone via the caffeinated API. That’s some serious self-surveillance. There are also a few visualizations, but mainly, they invite others to create their own.
Caffeine arcs:

How much coffee do you drink every day? More importantly, if you saw how much coffee you drink per year, would you cut back?

Visualize This: The FlowingData Guide to Design, Visualization, and Statistics (2nd Edition)

Big Brother is watching you, and his name is Juan Valdez.
I don’t drink too much, 3-4 cups a day. Of course, each of my cups is the capacity of a small kitchen coffeemaker (5-cup, where a ‘cup’ of coffee is 5 or 6 fluid ounces). I use a souvenir Hershey’s Chocolate mug with an internal diameter of 4″ and an inside height of 5″, and the coffeemaker fills it 3/4 to the top.
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If only they sold coffee in IV bags. Of course I would then probably be eating coffee candy when hooked to the IV.
Isn’t hacking the coffee maker perhaps itself a symptom of caffeine overconsumption? I’m just sayin….