1000ms is a surprisingly long wait at a ticket barrier, though! Latency is every... | Hacker News

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		teknologist on June 24, 2024 \| parent \| context \| favorite \| on: The tiny chip that powers Montreal subway tickets 1000ms is a surprisingly long wait at a ticket barrier, though! Latency is everything in this use case...

rswail on June 26, 2024 [–]

Usual requirement is <500ms from tap to passenger through the barrier, which includes not only the validation/fare deduction etc, but also the display and barrier unlock.

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