Forcing user to download your app for flight check in. This is utterly ridiculous. It should be complained to kpdnhep to protect consumers right. You cannot simply just force people to download your app to boost the popularity of the app. You are well known for your ridiculous policy and extremely lousy customer service. Cheap flight ticket price doesn't give you a stand to treat your customer in that way. I will download just to check in flight and will uninstall straightaway.