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Duplicate document detection: catch the same file sent twice

Duplicate document detection: catch the same file sent twice

How it works

For a new direct upload, hivi-x saves the file and compares its SHA-256 fingerprint with the same uploader's recent submissions for that client. It excludes the newly saved file itself. An identical file gets a warning such as “You already sent this exact file as 'pay-stub-june.pdf'.”

The client can Replace file or Send anyway. The business sees the same warning, plus a separate note if the client acknowledges it with Send anyway. The upload remains accepted even without that acknowledgement.

The my-id.ca account assistant also checks for duplicates before its send confirmation. Duplicate checks do not require the photo-reading model, so they can still run when that model is unavailable.

Limits

  • Exact bytes only: a new photo or scan of the same page is not detected as a duplicate.
  • The search covers recent checklist submissions, not every file ever stored.
  • Direct-upload checks stay within the current client's scope; they do not reveal another client's files.
  • Existing uploads are not rechecked. If a check cannot run, the file remains accepted and the business can see that checks were incomplete or unavailable.

Related

Organize client document intake with checklists

hivi-x helps Ontario professionals collect client documents with reusable checklists, secure Canadian hosting, and exportable PDF packages.

Duplicate document detection: catch the same file sent twice