Well the new machines will spit out a paper ballot which the voter can review for accuracy and then scan it into the machine which retains the paper ballot for recount purposes.
Still not good enough. The bits can be manipulated for the printout, and transmitted as corrupted to the central computing facility. Only during a recount would it be caught, maybe. In fact, the scanned version can be manipulated as well, so to match the corrupted version transmitted earlier. The only way, IMHO, is paper and ink dye.