Hello, I have been working to try to create a scanner to scan a PDF417 barcode from your photos library for a few days now and have come to a dead end. Every time that I run my function on the photo, my array of observations always returns as []. This example is me trying to use it with an automatic generated image because I think that if it works with this, it will work with a real screenshot. That being said, I have already tried with all sorts of images that aren't pre-generated, and they, still, have failed to work. Code below: Calling the function createVisionRequest(image: generatePDF417Barcode(from: "71238-12481248-128035-40239431")!) Creating the Barcode: static func generatePDF417Barcode(from key: String) -> UIImage? { let data = key.data(using: .utf8)! let filter = CIFilter.pdf417BarcodeGenerator() filter.message = data filter.rows = 7 let transform = CGAffineTransform(scaleX: 3, y: 4) if let outputImage = filter.outputImage?.transformed(by: transform) { let context = CIContext() if let cgImage = context.createCGImage(outputImage, from: outputImage.extent) { return UIImage(cgImage: cgImage) } } return nil } Main function for scanning the barcode: static func desynthesizeIDScreenShot(from image: UIImage, completion: @escaping (String?) -> Void) { guard let ciImage = CIImage(image: image) else { print("Empty image") return } let imageRequestHandler = VNImageRequestHandler(ciImage: ciImage, orientation: .up) let request = VNDetectBarcodesRequest { (request,error) in guard error == nil else { completion(nil) return } guard let observations = request.results as? [VNDetectedObjectObservation] else { completion(nil) return } request.revision = VNDetectBarcodesRequestRevision2 let result = (observations.first as? VNBarcodeObservation)?.payloadStringValue print("Observations", observations) if let result { completion(result) print() print(result) } else { print(error?.localizedDescription) //returns nil completion(nil) print() print(result) print() } } request.symbologies = [VNBarcodeSymbology.pdf417] try? imageRequestHandler.perform([request]) } Thanks!