How to Request Signature with Authentication

Authentication is the process of verifying the identity of a user, adding an additional layer of security to the document signing process. BoldSign supports multiple authentication methods, including Email OTP, SMS OTP, and access code authentication, to verify the signers.

AccessCode - A set of alphanumeric characters specified by the sender to the recipient for accessing the document. The sender needs to provide the secure code directly to the recipient.
EmailOTP - A system-generated one-time password delivered to the recipient's mailbox, required to access the document.
SMSOTP - A system-generated one-time password delivered to the recipient's phone number, required to access the document.

Code snippet

The following sample code snippet requests the EmailOTP authentication to be added to one of the document's recipients.

curl -X 'POST' \
  'https://api.boldsign.com/v1/document/send' \
  -H 'accept: application/json' \
  -H 'X-API-KEY: {your API key}' \
  -H 'Content-Type: multipart/form-data' \
  -F 'Signers={
  "name": "hanky",
  "emailAddress": "[email protected]",
  "signerType": "Signer",
  "signerRole": "Signer",
  "authenticationType": "EmailOTP",
 "formFields": [
   {
     "id": "signid",
     "fieldType": "Signature",
     "pageNumber": 1,
     "bounds": {
       "x": 50,
       "y": 100,
       "width": 100,
       "height": 60
     },
     "isRequired": true
   }
 ]
}
  ' \
  -F 'Files=@{your file}'

var apiClient = new ApiClient("https://api.boldsign.com", "{Your API key}");
var documentClient = new DocumentClient(apiClient);

var documentFilePath = new DocumentFilePath
{
    ContentType = "application/pdf",
    FilePath = "{Your File path}"
};

var filesToUpload = new List<IDocumentFile>
{
    documentFilePath,
};

var signatureField = new FormField(
   id: "sign",
   isRequired: true,
   type:FieldType.Signature,
   pageNumber: 1,
   bounds: new Rectangle(x: 100, y: 100, width: 100, height: 50));

var formFieldCollections = new List<FormField>()
{
    signatureField
};

var signer = new DocumentSigner(
    signerName: "hanky",
    signerEmail: "[email protected]",
    formFields: formFieldCollections,
    authenticationType: AuthenticationType.EmailOTP,
    locale: Locales.EN);

var documentSigners = new List<DocumentSigner>()
{
    signer
};

var sendForSign = new SendForSign()
{
    Signers = documentSigners,
    Files = filesToUpload
};
var documentCreated = documentClient.SendDocument(sendForSign);
Console.WriteLine(documentCreated.DocumentId);

import boldsign

configuration = boldsign.Configuration(host = "https://api.boldsign.com", api_key = "YOUR_API_KEY")

with boldsign.ApiClient(configuration) as api_client:

    document_api = boldsign.DocumentApi(api_client)

    send_for_sign = boldsign.SendForSign(
        title = "Document SDK API",
        document_title = "SDK Document Test case",
        description = "Testing document from SDK integration test case", 
        files = ["YOUR_FILE_PATH"],
        signers = [
            boldsign.DocumentSigner(
                name = "Hanky",
                emailAddress = "[email protected]",
                signerOrder = 1,
                signerType = "Signer",
                authenticationType = "EmailOTP",
                formFields = [
                    boldsign.FormField(
                        name = "Sign",
                        fieldType = "Signature",
                        font = "Helvetica",
                        pageNumber = 1,
                        isRequired = True,
                        bounds = boldsign.Rectangle(x = 50, y = 50, width = 100, height = 150)
                    )
                ],
                privateMessage = "This is private message for signer"
            )
        ]
    )

    document_created = document_api.send_document(send_for_sign)

<?php require_once "vendor/autoload.php";

use BoldSign\Configuration;
use BoldSign\Api\DocumentApi;
use BoldSign\Model\{FormField, Rectangle, DocumentSigner, SendForSign, DocumentInfo, FileInfo};

$config = new Configuration();
$config->setHost("https://api.boldsign.com");
$config->setApiKey('YOUR_API_KEY');

$document_api = new DocumentApi($config);

$form_field = new FormField();
$form_field->setName('Sign');
$form_field->setFieldType('Signature');
$form_field->setPageNumber(1);
$form_field->setFont('Helvetica');
$form_field->setIsRequired(true);
$bounds = new Rectangle([50, 50, 100, 150]);
$form_field->setBounds($bounds);

$document_signer = new DocumentSigner();
$document_signer->setName('Hanky');
$document_signer->setEmailAddress('[email protected]');
$document_signer->setSignerType('Signer');
$document_signer->setSignerOrder(1);
$document_signer->setFormFields([$form_field]);
$document_signer->setAuthenticationType('EmailOTP');
$document_signer->setPrivateMessage('This is private message for signer');

$send_for_sign = new SendForSign();

$documentInfo = new DocumentInfo();
$documentInfo->setTitle('Document SDK API');
$documentInfo->setDescription('Testing document from SDK integration test case');
$send_for_sign->setDocumentInfo([$documentInfo]);

$files = new FileInfo();
$files = 'YOUR_FILE_PATH';
$send_for_sign->setFiles([$files]);

$send_for_sign->setTitle('SDK Document Test case');
$send_for_sign->setSigners([$document_signer]);

$document_created = $document_api->sendDocument($send_for_sign);

ApiClient client = Configuration.getDefaultApiClient();
client.setBasePath("https://api.boldsign.com");
client.setApiKey("YOUR_API_KEY");

DocumentApi documentApi = new DocumentApi(client);

FormField formField = new FormField();
formField.setName("Sign");
formField.setFieldType(FormField.FieldTypeEnum.SIGNATURE);
formField.setPageNumber(1);
formField.setFont(FormField.FontEnum.HELVETICA);
formField.setIsRequired(true);
Rectangle bounds = new Rectangle().x(100f).y(100f).width(100f).height(50f);
formField.setBounds(bounds);

DocumentSigner signer = new DocumentSigner();
signer.setName("Hanky");
signer.setEmailAddress("[email protected]");
signer.setSignerOrder(1);
signer.setSignerType(DocumentSigner.SignerTypeEnum.SIGNER);
signer.setFormFields(Arrays.asList(formField));
signer.setAuthenticationType(DocumentSigner.AuthenticationTypeEnum.EMAIL_OTP);
signer.setPrivateMessage("This is private message for signer");

SendForSign sendForSign = new SendForSign();

File file = new File("YOUR_FILE_PATH");  
sendForSign.setFiles(Arrays.asList(file));   

sendForSign.setSigners(Arrays.asList(signer));
sendForSign.setTitle("Document SDK API");

DocumentCreated documentCreated = documentApi.sendDocument(sendForSign);

import { DocumentApi, DocumentSigner, DocumentInfo, FormField, Rectangle, SendForSign } from "boldsign"; 
import * as fs from 'fs';

const documentApi = new DocumentApi("https://api.boldsign.com");
documentApi.setApiKey("YOUR_API_KEY");

const bounds = new Rectangle();
bounds.x = 100;
bounds.y = 50;
bounds.width = 100;
bounds.height = 100;

const formField = new FormField();
formField.name = "Sign";
formField.fieldType = FormField.FieldTypeEnum.Signature;
formField.font = FormField.FontEnum.Helvetica;
formField.pageNumber = 1;
formField.isRequired = true;
formField.bounds = bounds;

const documentSigner = new DocumentSigner();
documentSigner.name = "David";
documentSigner.emailAddress = "[email protected]";
documentSigner.signerOrder = 1;
documentSigner.signerType = DocumentSigner.SignerTypeEnum.Signer;
documentSigner.formFields = [formField];
documentSigner.authenticationType =  DocumentSigner.AuthenticationTypeEnum.EmailOtp;
documentSigner.privateMessage = "This is private message for signer";

const files = fs.createReadStream("YOUR_FILE_PATH");

const sendForSign = new SendForSign();

const documentInfo = new DocumentInfo();
documentInfo.title = "SDK Document Test case";
documentInfo.description = "Testing document from SDK integration test case";
sendForSign.documentInfo = [documentInfo];

sendForSign.title = "Document SDK API";
sendForSign.signers = [documentSigner];
sendForSign.files = [files];

const documentCreated = documentApi.sendDocument(sendForSign);

In the above code example, we have enabled EmailOTP authentication. Similarly, please refer to this link for SMS authentication, and use this link for Access code authentication.

Note: It's important to note that SMS authentication can be added to the document only for paid plans.