Like any electronic device, breath testing machines are subject to error. They are subject to human error and they are subject to mechanical error. These machines inherently have a margin of error that could show a BAC that is off by fractions of a percentage. Breath testing machines, if administered incorrectly, could also give false readings. Our Tampa DUI lawyer may be able to get a drunk driving charge dropped by proving the test was administered improperly or because that particular breath test model has proven to be faulty in the past.