When at the airport you can leave the Accu-Chek SmartGuide sensor on your body to pass through full-body scanners. Keep your medical certificate ready for any queries from security personnel. Spare sensors inside your luggage can pass through airport screenings as well.

Your sensor communicates with your smartphone via Bluetooth Low Energy. On most airplanes, the operation of devices with active Bluetooth connectivity is now officially permitted. However, to be on the safe side, check in advance with the airline to see to what extent smartphone operation is permitted during the flight. During the flight, the smartphone must be switched to airplane mode.

When you turn on airplane mode on your smartphone, Bluetooth might automatically switch off as well (depending on your smartphone model). In this case, to re-establish the communication despite the active flight mode, follow the steps below to enable communication with Bluetooth between your sensor and your smartphone:

- iOS devices:

Open the Control Center. 
Tap the icon for Bluetooth wireless technology to turn communication on. 
- Android devices:

Open the quick settings by swiping down from the top of the screen. 
Tap the icon for Bluetooth wireless technology to turn communication on.
Changing Time Zones:

If you travel to a different time zone, the time in your smartphone adjusts to the local time (as soon as you deactivate flight mode when you are travelling by airplane). The Accu-Chek SmartGuide app also adopts the local time for all displayed CGM values, so there is no overlap or duplication of CGM values. This is possible because the values are stored in the background in a universal time (UTC) and are adjusted automatically to the time zone you are in. Also refer to link to travel content on training website.