ForceTouchGestureRecognizer is tap gesture recognizer of 3D touch.
ForceTouchGestureRecognizer *forceGesture = [[ForceTouchGestureRecognizer alloc] initWithTarget:self
action:@selector(forceTouched:)];
[self.tapView addGestureRecognizer:forceGesture];
Simply add the following to your Podfile if you're using CocoaPods:
pod 'ForceTouchGestureRecognizer'