They also print their own baggage tags at the kiosks, speeding up the process at baggage drop points.

WSJ: Flying Through the Airport

Baggage tags, banknotes with electronics embedded for security and even postage stamps that can be read by smart franking machines are other possible uses.

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The mayor, Bob Scott, a lifelong resident, told me that he wants the world to know that Sioux City doesn't do what those three letters on the baggage tags says.

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In addition, airlines and airports that use automated kiosks for services such as printing boarding passes and baggage tags would have to ensure that any kiosk ordered 60 days after the rule takes effect is accessible.

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An Australian who spent most of his career in the U.S., he was a rebel outsider with club privileges (a column for more than 20 years at Time, an open door at The New York Review of Books, film crews trailing him around) and no cultural baggage tags that others could readily identify.

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Las Vegas and Hong Kong both have baggage systems in which paper bag tags have RFID chips imbedded in them, but the technology hasn't spread.

WSJ: Flying Through the Airport