The dive shops that insist on bumper stickers nitrox banding claim it is for divers safety. I am all for dive safety and will dive with any diver diving within there training and experience. But if divers are so poorly trained they do not check the tank they are breathing from they should not dive. There is a training problem! All my tanks are din. Anyone able to use a din connection should have more knowledge than the average diver. My tanks allso have my name address and phone # and are labeled with contents and MOD. Additional rules and bumper stickers does not make poorly trained divers safer!
Improve training. Bumper stickers are a feel good bandaid to avoid responsibility and does not fix ignorace and poor training!