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Spock, son of Sarek (fire_and_rose) wrote in undertherainbow,

Some of them have bar codes. An outdated technology, but I suppose the only efficient option in this world. They bear names I assume to be those of businesses. Are these some sort of currency?

I have two other cards with a series of numbers on the front, and a magnetic strip on the back. I am unable to determine what purpose these serve.

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