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Xerox scanners/photocopiers randomly alter numbers in scanned documents (2013) (dkriesel.com)

486 points by SergeAx · 1771 days ago · 184 comments on HN

Article summary

A Xerox scanner/photocopier bug randomly alters numbers in scanned documents, potentially causing incorrect invoices, construction plans, and other documents. The bug is caused by a pattern matching engine that incorrectly replaces image segments, leading to incorrect characters. The issue affects hundreds of thousands of Xerox WorkCentre and ColorQube machines worldwide. The bug has significant legal implications, as scanned documents may not be admissible as evidence due to potential errors.

Main themes

  • Xerox scanner bug
  • digital document reliability
  • compression algorithm implementation
  • legal implications
  • digital technology fidelity
  • software errors
  • knowledge dissemination vs. restriction

What commenters say

  • The Xerox scanner bug has significant implications for the reliability of digital documents and evidence.
  • The issue highlights the importance of proper implementation of compression algorithms and adherence to specifications.
  • Some commenters suggest that the problem could have been avoided if the developers had followed the specification and implemented safeguards.
  • The bug's discovery has led to concerns about the trustworthiness of digital technology in legal and other contexts.
  • There is a need for better tools and methods to detect and prevent such errors in digital documents.
  • The controversy surrounding the Xerox bug is related to ongoing discussions about the fidelity of digital technology and its potential to alter or manipulate evidence.
  • The Xerox bug is an example of how software problems can be caused by simple mistakes or oversights, such as incorrect implementation of algorithms.
  • The issue has sparked debate about the balance between restricting access to content for ideological reasons and disseminating knowledge widely.