Earlier quoted context omitted.
Cumbersome, but cam you imagine the benefits to health, if expanded to food production, when an e.coli etc. outbreak happens or mad cow, etc. Trace back the farm and know exactly which lots to pull.
Cue the food industry crying about massive increase in costs (to track, but also to drop cheap ingredients sourced in PR-unfriendly ways).
[1] http://smallbusiness.chron.com/profit-margin-raising-corn-34...