In reply to michel4388:
Hi michel4388,
I hope you enjoyed the Durance via ferrata, my Girlfriend works there.
For the use of rope with kids, its there to cover two things. First as you say to stop the risk of a kid taking off both Krabs, it does happen. Top tip so to tell them they can only use one hand to do the clips. the other reason is to be able to belay them if you think there is a high risk of falling (steeper sections) as they don't have the body weight to trigger the lanyard.
Like all Via ferrata protection is not 100% perfect, unlike something like top-roping in climbing.
What you are suggesting for traverses is fine. To be honest on easy traverse sections if your close you can check that they are doing the clips right, which should eliminate that risk. As for the not triggering the lanyard well, it should be a short fall (maybe not very nice) but unless you can get a point above them you can't really do much about it. Plus if you're close you can talk them through any trick bits.
You should never rely on young kids to do the safe thing every time as they can forget or get exited and make mistakes, but there are different ways to manage them depending on their needs and support they need.
All good ropes course now have fixed systems that can't be totally released, this can be done by magnets or by specially shaped lanyards. As of yet there isn't anything like this for Via ferrata, one of the reasons for this is the cable can be different sizes depending where you do it. this may change as more and more families are looking to do via ferrata, so they may start to design stuff with them in mind. That said even if they had a lanyard rated for kids, I wouldn't want them taking up to 5m fall down a route before it triggered.
I am not sure how old your kid is but the Green route at the durance is good if you skip the first start and go up the ladder. Or the route at Puy st Vincent 1400, its in the shade and never gains much hight, there are harder sections but you can miss them out.
I have a free app guide to the Via ferrata run the area.
Just search Via Ferrata ecrins briancon where ever you get your apps and it should come up.
Cheers Rob
Post edited at 15:42