PARK & SMILE air is a remote control app for the semi-automatic KLAUS Multiparking TrendVario 4000 systems. Please note that only compatible TrendVario 4000 systems can be operated with this app. Please contact your property manager or KLAUS Multiparking representative to find out if the parking system you are using is compatible.Use the PARK & SMILE air app to register your TrendVario parking space on your iPhone or iPad. You'll receive the QR code required to register your parking space with your user's manual and other documents after setup and handover of your TrendVario system.After registration, you can request your parking space or close your parking space door just as easily as with your infrared or radio remote control. You can enter the closing color code with the colored buttons in the app, or just bring up the color scanner in the app and point your camera at the color light.Requires iPhone 4s or later, iPad 3rd gen or later, iPod touch 5th gen or later.