Billboards that educate people on the dangers of smoking will definitely have more of an effect than shaming them. Shaming people can make them feel as though they are being unfairly persecuted, and could have the unintended effect of causing rebellious participation to seem "cool."
If we educate people on the consequences of smoking, we will be able to appeal to their sense of self-preservation. This kind of message, with contact information on people who are willing to help them quit, would be much more effected than shaming them.
I say this as someone who actually does have to cough and have trouble breathing when around cigarette smoke. In such places people have the option to avoid the smoker if they wish, and you should not shame them in going about a legal activity that is not potentially hurting someone else.
However if they wanted to place them in areas where smoking is prohibited, people smoke anyways, and it does force people to endure it (even temporarily), such as hospital or university building entrances (with permission of the owner of course) then I'd consider it.
It's unfair to shame people because they smoke. Smoking is an addiction and some people can't help it. This is no different than calling someone fat when they walk past a billboard. Instead, there are nicer ways for a billboard to send its message than say terrible things that might hurt someone's feelings.
The concept of the coughing billboards is extremely silly and I needed. Where does anyone get off shaming or identifying someone who is engaging in perfectly legal activity. The only reason I'll billboard should causes if a doctor asked it to drop trau and turn to the left and cough.
Billboards should not be equipped to detect smoking nearby and then shame the person. Smoking is bad for the individual and those around them, but these seems like a waste of money. I can not imagine this would be an effective tool to fight smoking. People would simply distance themselves, if they care at all about the billboards.
No, more billboards should not be equipped to detect smoking nearby and then shame the person. It sounds too much like the novel 1984. Where is the privacy? If people smoked, they should not be shamed. They should simply be asked to smoke somewhere else or be given help to quit.