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by stevenwei 5878 days ago
Not really sure how accurate that is....most ticket printers, magnetic card readers, weigh scales, barcode scanners, and other POS related devices adhere to the Unified POS standard.

There is a Java implementation of the standard (called, unsurprisingly, JavaPOS) as well as a .NET implementation (called POS for .NET). I've run a Linux based point of sale that used JavaPOS to interface with peripherals without issue.