A School of Continuous Improvement paper matches 4,812 home-printed boarding passes to gate-reader logs and finds reprinting lifts first-scan success without moving how long boarding takes.
First-scan success rises with each home reprint; boarding interval does not, and a second scan still costs the lounge waiver
A second scan at the gate does not slow boarding. A regional carrier’s Print Legibility Working Group withholds the lounge waiver for it anyway. A paper published today by Dr Thandiwe Solberg, Dr Runa Adegoke and Dr Joost Nwosu matches 4,812 home-printed boarding passes to six airports’ gate-reader logs over fourteen weeks.
First-scan success is the carrier’s published gate-readiness indicator. Households reprint until the barcode looks official. A twice-reprinted photo-paper copy reaches 94 percent first-scan success, against 61 percent for a single 80 gsm copy. Seconds from group-call to the accepted scan do not follow: first-scan, reprinted then scanned, and second-scan sit within a few seconds of one another. Among passengers from whom a lounge waiver was withheld, the median interval sat three seconds above the first-scan median.
The finding sits with a line of University work on indicators that move without moving the thing they are taken to stand for. A paper-weight attestation issued later in the window was ticked by most home-print passengers and left first-scan success unmoved. Removing the Working Group’s recommended contrast-enhancement prior changed the rate by less than a percentage point.
A first-scan rate is a fact about the reader and the paper. Boarding time is a fact about the jet-bridge. The two can sit next to each other without being the same measurement.
— Dr Thandiwe Solberg, Senior Lecturer and Convenor, Demo Quarter
“Withholding a waiver from a second scan is a decision the indicator can support,” said Dr Joost Nwosu, Postdoctoral Fellow in the School of Continuous Improvement. “It is not a decision boarding interval appears to require.”
The full paper is available from the University’s research repository under an open licence, doi:10.5555/slop.oszg9g.