The problem is with computerized voting we the citizens have no way of independently verifying the vote count or even proving computerized vote fraud. Electronic systems can be designed to be extremely resistant against fraud, moreso even than paper ballots [though the paper-electronic hybrids are probably best]. Unfortunately, many systems use flash memory or other storage technologies which may be altered without a trace.
Electronic systems can be designed to be extremely resistant against fraud......
Not if the programmers(designers) are involved in the fraud and no one from the public has access to the computer codes and programs(as the situation is now).