New certifications systems, however, aim to attach bar codes to packages of Congolese metals that have been certified as conflict-free.

CNN: John D. Sutter,

Scanning instead of typing might work since most space-food packages have bar codes, but some are stamped on shiny curved surfaces while others are printed on thin crinkled paper wrapped around freeze-dried items.

FORBES: NASA Asks The 'Crowd' To Help Track What Astronauts Eat