ユーザーの物理的な位置の確認

import UIKit
import AppClip
import AppClip
import CoreLocation


class SceneDelegate: UIResponder, UIWindowSceneDelegate {
    
    var window: UIWindow?
    
    // Call the verifyUserLocation(_:) function in all applicable lifecycle callbacks.


    func verifyUserLocation(_ activity: NSUserActivity?) {
        
        // Guard against faulty data.
        guard activity != nil else { return }
        guard activity!.activityType == NSUserActivityTypeBrowsingWeb else { return }
        guard let payload = activity!.appClipActivationPayload else { return }
        guard let incomingURL = activity?.webpageURL else { return }


        // Create a CLRegion object.
        guard let region = location(from: incomingURL) else {
            // Respond to parsing errors here.
            return
        }
        
        // Verify that the invocation happened at the expected location.
        payload.confirmAcquired(in: region) { (inRegion, error) in
            guard let confirmationError = error as? APActivationPayloadError else {
                if inRegion {
                    // The location of the NFC tag matches the user's location.
                } else {
                    // The location of the NFC tag doesn't match the records;
                    // for example, if someone moved the NFC tag.
                }
                return
            }
            
            if confirmationError.code == .doesNotMatch {
                // The scanned URL wasn't registered for the App Clip.
            } else {
                // The user denied location access, or the source of the
                // App Clip’s invocation wasn’t an NFC tag or visual code.
            }
        }
    }


    func location(from url:URL) -> CLRegion? {
        let coordinates = CLLocationCoordinate2D(latitude: 37.334722,
                                                 longitude: 122.008889)
        return CLCircularRegion(center: coordinates,
                                radius: 100,
                                identifier: "Apple Park")
    }
}