BrandKwikID Documentation
API SuiteDocument OCR (ML)

Passport Back OCR

OCR the endorsement or back page region of a passport from an image. Server-side multipart POST with Bearer auth.

API reference

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AuthorizationBearer <token>

JWT Bearer token authentication. Obtain a token from the KwikID dashboard.

In: header

filestring
flags?string

Optional JSON string. Keys: CARD_ORIENT (0/1) corrects orientation; CARD_CROP (0/1) runs document crop before OCR.

unique_id?string

Optional correlation id for logs.

Response Body

curl -X POST "https://__mock__/ocr/passport/back" \  -F file="string"
{
  "address": "string",
  "father_name": "string",
  "mother_name": "string",
  "old_passport_date_of_issue": "string",
  "old_passport_number": "string",
  "old_passport_place_of_issue": "string",
  "passport_number": "string",
  "spouse_name": "string"
}
{
  "detail": {
    "<location>": {
      "<field_name>": [
        "string"
      ]
    }
  },
  "message": "string"
}
{
  "detail": {},
  "message": "string"
}

Overview

Call POST /ocr/passport/back with Authorization: Bearer <token> and file. Optional flags and unique_id. Use when your process requires endorsements or secondary stamps captured from the back.

Key features

  • Complements front OCR for full document digitization.
  • Same multipart contract as other OCR routes.

Implementation

Step 1: Call from your backend

Upload back page image as file.

Error handling

HTTP statusWhen
400Unreadable image.
401Invalid token.

Benefits

  • Supports journeys that require both passport sides.

Next steps