Given the amount of computer issues airports and other major companies have had recently, then a manual alternative is certainly needed. The damage caused by hackers is costing companies millions (never mind the inconvenience to their customers) and I can see it getting worse.. State sponsored hacking in particular seems to be on the increase too.
A manual alternative would certainly help these companies and would also benefit those not quite so savvy. Of course, I doubt it would be easy, but I think it would be a wise move.