I’d think it more likely that in the case of cameras the software reads the immatriculation and checks a Critair central database.
The positioning of the sticker near French road nearside? is probably something you’d only get into trouble for breaching if you catch a policeman on a bad day and when they’ve not also got a huge queue behind you to process?
One added point. If any of your vignettes (ct, insurance, crit’air etc) are incorrectly positioned, it’s a reason for the police to stop you and raise those (and perhaps other) issues.
Just read the instructions and place the stickers where required. It’s really not difficult.
(Edited to add: sorry, not aimed at you, @KarenLot - I mistakenly replied to your post rather than an earlier one)
Yes, you’re right. Use the current infrastructure.
Bugger that 
I didn’t get where I am today by reading the instructions, ever since my fist Airfix.
I’ve driven in, or at any rate through Paris and survived, parking however, as has been mentioned, is a whole other ball game.
In my experience there’s only one thing worse than driving in/through Paris… and that’s trying to keep up with a Parisien friend who’s in the car in front…
Flippin 'eck… so many near misses while we tried not to lose our “leader”… as he was the only one who actually knew where we were going… 
I did drive in Paris and even park there, but that’s more than 20 years ago. 2 things struck me at the time: more than a third of the cars I saw over a 3 day period had bodywork damage, and the Parisians were able to create gridlock on a simple crossroads junction.
FWIW driving round the AdT was scary then.
Best time we had in Paris was on a Sunday, when our classic car club had special permission to drive up and down alleys and whatever… usually not open to traffic… sunshine all the way and enthralled bystanders who thoroughly enjoyed the “show”…
Spent three days there just before Christmas. Small hotel in the Marais which even had a garage, à la 1950s 
We just drove in and out so didn’t find driving an issue. In fact circumnavigating the Arc de Triomphe was probably less frenetic than forty years ago. But as mentioned many local cars has a bash somewhere. I think the only way to drive around Paris (and many other cities, Naples, Rome, etc.) worry free is in a rented car with full CDW.
We love that arrondissement.
The slightly naughty side of me wants to ask, if you put the crit air sticker where the sun doesn’t shine, will that help reduce global warming through lower solar heating?
Should be alright of you moon the detection cameras. It’ll need level four Vehicle Autonomy though.
How interesting that a thread that really could be answered within the first couple of posts has generated 91 replies. 
Everyone needs a hobby
Yes lots of varying thoughts - which I didn’t expect when I started the thread!
It’s perhaps worth mentioning for the “TL/DR” crowd that my original post was intended merely as a gentle warning to those of us that are still primarily based in the UK with RHD cars, and who therefore have to suffer the tender mercies of UK MOT testers deciding where we should or should not stick our stickers!! 
I put mine in the same position as the French so I must be correct. Its the steering wheel thats on the wrong side so incorrect but they cant give you a ticket for that
Ah, but you’re a former resident of Jo’burg!
What in an open top car??
I’ve been watching in amazement as the number of posts continues to climb (and of course, this is another).
Will score a century before the night’s out…
