The first entry is always the pin's source. Overall confidence is a weighted average of how firmly each reference supports the start and end times used above; a reference counts half as much for every 180 days older than the newest.
Happened as dated, per arstechnica.com: "…rcutting the establishment. Amazon just announced its new Local Register service, a mobile card read…"
Amazon's own press release confirms it introduced the Local Register mobile card reader on 13 August 2014, matching the pin's stored date exactly.[1]
MacRumors independently corroborates Amazon launching the iOS-compatible Local Register card reader on 13 August 2014, aligning with the pin's stored date.
The Washington Post's own headline and 13 August 2014 publish date report Amazon going "bricks-and-mortar" with its mobile card reader, matching the pin's stored date, though the page itself could not be fetched to quote directly.
Something missing or wrong? Say it in your own words: a link that backs this pin up, a different start or end date and why, or a fact it lacks or gets wrong. The AI checks it against this pin's sources, searches for better ones, and adds any page that backs you up. The pin's own sources still count most.