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Communication

Upload a document and get instant results. Gain a deeper understanding of how Veryfi Lens interacts with your application.

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  1. Set your delegate:
VeryfiLens.shared().delegate = self
  1. Implement the delegate methods:
extension ViewController: VeryfiLensDelegate {

func veryfiLensClose(_ json: [String : Any]) {
    let jsonData = try? JSONSerialization.data(withJSONObject: json as Any, options: .prettyPrinted)
    let jsonString = String(data: jsonData!, encoding: .utf8)
    print(String("veryfiLensClose: " + jsonString!))   // do something with the JSON here
}

func veryfiLensUpdate(_ json: [String : Any]) {
    let jsonData = try? JSONSerialization.data(withJSONObject: json as Any, options: .prettyPrinted)
    let jsonString = String(data: jsonData!, encoding: .utf8)
    print(String("veryfiLensUpdate: " + jsonString!))   // do something with the JSON here
}

func veryfiLensSuccess(_ json: [String : Any]) {
    let jsonData = try? JSONSerialization.data(withJSONObject: json as Any, options: .prettyPrinted)
    let jsonString = String(data: jsonData!, encoding: .utf8)
    print(String("veryfiLensSuccess: " + jsonString!))   // do something with the JSON here
}

func veryfiLensError(_ json: [String : Any]) {
    let jsonData = try? JSONSerialization.data(withJSONObject: json as Any, options: .prettyPrinted)
    let jsonString = String(data: jsonData!, encoding: .utf8)
    print(String("veryfiLensError: " + jsonString!))   // do something with the error JSON here
}
}

Delegate Definitions​

  • veryfiLensClose - the Veryfi Lens camera has been closed, either as a result of submitting an image for processing, or the user closed the camera without submitting an image.
{
    "status": "close",
    "queue_count": 1,
    "framework-version": "1.4.0",
    "session_scan_count": 1,
    "framework-build": "1"
}

NOTE: In the object above, queue_count refers to the number of submitted documents that are currently in the processing queue. session_scan_count refers to the number of documents that were submitted in the most recent Lens camera session - if this is equal to 0 (zero) then the camera session was canceled without submitting anything.

  • veryfiLensUpdate - during the processing of a document, this delegate will be fired multiple times. One time it will contain the thumbnail path for the submitted document and one time it will contain a full-size image path. In addition, multiple instances of this delegate will be fired containing the current upload progress percentage.

Sample package created notification:

{
    "status": "start",
    "package_id": "edc8653e4c2b4ef1"
}

Sample full-size image path data:

{
    "status": "inprogress",
    "msg": "img_original_path",
    "data": "/path/to/image.jpg",
    "package_id": "5kY9hXlb0COeg5n07y71",
    "document_type": "credit_card"
}
  • veryfiLensError - if an error occurs during uploading or processing a submitted or a general exception or crash is caught in Veryfi Lens, this notification contains the error details.

Sample error data:

{
    "status": "error",
    "package_id": "edc8653e4c2b4ef1",
    "error": "[Wombat].Reachability.noInternetConnection"
}
  • veryfiLensSuccess - this delegate fires once a document has finished processing, whether it was submitted via the camera, the gallery, or it was dictated or entered/typed manually. This delegate provides the response from the Veryfi API.

Sample data:

{
    "status": "done",
    "msg": "results",
    "data": {
          "card_number": "5143 3201 1937 4709",
          "card_name": "ALEJANDRO URIBE",
          "card_type": "mastercard",
          "card_dates": [ "1/10"],
          "card_cvc": ""
    },
    "package_id": "5kY9hXlb0COeg5n07y71"
}