That's exactly what David Berger (68), a retired mechanical engineer from Ohio, asked himself last year while trying to print a boarding pass for a trip to visit his grandkids.
"My old printer flashed 'low ink' the one time I actually needed it," David explains. "By the time I drove to the store and bought new cartridges, I'd missed my window. I stood there in the aisle looking at an $80 box of ink and thought — this is insane. There has to be a better way."
With over 30 years of engineering experience, David couldn't get the idea out of his head.