Works great and chic motif

- Download the app "trigger" from the Google gates
- Each a macro event for programmed on / off
- Stored on NFC on the sticker
Glued stickers -

Now, when I get into the car, I think the phone briefly to the sticker:
Wi-Fi is disabled / Mobile data and Bluetooth enabled.

When I step out of the car, I think the phone again briefly to the (same) Sticker:
Bluetooth is turned off / WLAN is disabled and Mobile data remains activated.

Macros are stored on the sticker.
This has the advantage that you can not re-enter after a reset of the phone, the macro or the macros can call any phone - install trigger sufficient.

Nice gimmick - beyond the car but I lack the meaningful use possibility.