Gas station helmet take off

In fact, I keep my helmet for payment. Only if I intend to have a cup of coffee on the motorway or the like, I take off my helmet. Now I have read that signs with a crossed-out helmet are to be found in Austria at some gas stations, which indicate that you have to take off your helmet for safety reasons when entering the cashroom. The staff feel so less “threatened”. How do you pay? With or without a helmet?