Punched paper tape
In 1846, Alexander Bain (the inventor of the electric clock) was the first to use punched tape to send telegrams. Paper tapes are now a largely obsolete form of data storage, must like the punch cards consisting of systematic hole punches within rows and columns. These hole punches created the annoying problem of disposing of paper "chads" and the incomplete punching of holes also posed problems for data interpretation. These so-called "hanging-chads" were the subject of the highly contentious 2000 U.S. Presidential race with incompletely punched voting ballots.