Minnesota Public Radio slideshow:
Travel much? One company sees barcodes in your future
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This is a model of the type of "registered traveler" cards that might be issues by an airline to be compatible with the PassPro system. PassPro says the card enables a "one second check-in." (Neither American Airlines nor any other U.S. airline has yet officially committed to any particular registered traveler technology.) (MPR Photo/Jeff Horwich)

This is a model of the type of "registered traveler" cards that might be issues by an airline to be compatible with the PassPro system. PassPro says the card enables a "one second check-in." (Neither American Airlines nor any other U.S. airline has yet officially committed to any particular registered traveler technology.)

(MPR Photo/Jeff Horwich)
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