I googled a bit.... it isnt that easy as it seems....
but I found sth wonderful.....
http://carsystems.com.ua/bmw-products-en/bmw-smart-opener-driver-en
I think this should be possible on our cars.
I am looking for some caps, which fit as well.... the length of the clamps (D) is a problem.... i ordered 2 sets on aliexpress. Both do not fit in....
i use the OEM for now but I want to change by time....