AWS Lambda PDF417 Driver License API

Designing a Safe PDF417 Route in AWS Lambda

A production AWS Lambda integration must protect the API key, reject oversized uploads, preserve enough image quality for decoding, and translate recoverable 422 responses into a useful capture experience. A browser-only request would expose credentials and make abuse controls harder.

A Server-Side AWS Lambda Integration

Lambda can accept a Base64 image from API Gateway, decode it into a Buffer, and call the SDK without bundling a local barcode engine. The PDF417 API reference documents the complete response and error model. Identity fields are only returned after deterministic barcode decoding and AAMVA parsing.

Where This Workflow Fits

• Protected upload endpoint: Keep STRUCTOCR_API_KEY inside AWS Lambda server configuration rather than client code.
• Structured form prefill: Map normalized AAMVA fields into an editable form and require user or staff confirmation.
• Recoverable retake flow: Turn PDF417_NOT_DECODED into a clear request for a sharper, complete license-back image.

AWS Lambda PDF417 Endpoint

The example accepts image data on the server and calls /v1/driver-license-pdf417. Adapt authentication, authorization, rate limits, and retention to your application.

Prerequisite: npm install structocr; store STRUCTOCR_API_KEY as an encrypted Lambda environment variable

const StructOCR = require("structocr");
const client = new StructOCR(process.env.STRUCTOCR_API_KEY);

exports.handler = async (event) => {
  const body = JSON.parse(event.body || "{}");
  if (!body.img) return { statusCode: 400, body: JSON.stringify({ error: "img is required" }) };
  try {
    const result = await client.scanDriverLicensePdf417(Buffer.from(body.img, "base64"));
    return { statusCode: 200, body: JSON.stringify(result) };
  } catch (error) {
    return {
      statusCode: error.status || 502,
      body: JSON.stringify({ error: error.code, message: error.message }),
    };
  }
};

AWS Lambda Response Shape

The example contains fictional identity values. Optional AAMVA elements can be null, and production logs should avoid storing raw identity data.

{
  "success": true,
  "data": {
    "type": "drivers_license",
    "source": "pdf417",
    "country_code": "USA",
    "region": "CA",
    "document_number": "SAMPLE1234",
    "surname": "SAMPLE",
    "given_names": "ALEX MORGAN",
    "first_name": "ALEX",
    "middle_name": "MORGAN",
    "sex": "X",
    "date_of_birth": "1990-01-15",
    "date_of_issue": "2025-01-15",
    "date_of_expiry": "2030-01-15",
    "address": "100 EXAMPLE AVE",
    "city": "SAMPLE CITY",
    "postal_code": "00000",
    "vehicle_class": "C",
    "restrictions": null,
    "endorsements": null,
    "document_discriminator": "SAMPLE-DISCRIMINATOR",
    "issuer_identification_number": null,
    "aamva_version": 10,
    "jurisdiction_version": 0
  }
}