Scan cards are used in some areas. One was a county with the highest rejection rate in Florida. A few use electronic devices to store votes in a computer. The most widely used device is the 1960s punch card technology, used in 37 percent of the precincts. These caused most of the complaints in this year's election.
None are fault-free.
For example, the mechanical lever machines used for years in Jacksonville required voters to flip levers by the names of candidates, then pull a huge lever upon leaving. It would open the curtain to the booth, record the vote and reset the levers. But old-timers tell of voters who flipped the levers, then reset them, assuming the vote already had been recorded. As a result, none of their votes were recorded. Jacksonville now uses punch cards, and its rate of votes rejected was one of the highest in the state.