Set up Bar Code Scanner Database Through Parse Server: Swift - swift

Question

I have a general question.
I have built in Xcode a unique QrCode that is generated based off of a user's objectID found in Parse Server.
Ultimately, I am trying to figure out how to scan that item using a scanner such as (another iphone, other mobile scanners) and once scanned, send that objectID and other information to that same parse database.
If that is not possible, I was wondering if it would be easier to scan it directly to Microsoft Excel and then manually input that data into parse (although this could take some time).
Here is my code:
import SwiftUI
import CoreImage.CIFilterBuiltins
let filter = CIFilter.qrCodeGenerator()
let context = CIContext()
var username = String()
var objectId = String()
//ViewDidLoad:
username = "Michael"
objectId = "Abc3432f5"
//qrCode Formatting
let image = generateQRCodeImage(string: objectId)
qrCodeImage.image = image
qrCodeImage.layer.magnificationFilter = CALayerContentsFilter(rawValue: kCISamplerFilterNearest)
//Functions
func generateQRCodeImage (string: String) -> UIImage {
let data = Data(string.utf8)
filter.setValue(data, forKey: "inputMessage")
if let qrCodeImage = filter.outputImage {
if let qrCodeCGImage = context.createCGImage(qrCodeImage, from: qrCodeImage.extent) {
return UIImage(cgImage: qrCodeCGImage)
}
}
return UIImage(systemName: "xmark") ?? UIImage()
}
And if so, is there a way to check if the data has already been uploaded to the excel spreadsheet?