I was just looking at reviews for it on Amazon and the vast majority say Touch ID works well. Some mentioned it could be finicky but most had no issues and say the case was specifically designed to accommodate that area for Touch ID.That looks like a very nice case, but the pictures reveal that it covers the power button, which would not be good for the Air 4 with its TouchID. So the case is probably meant for the Pro and also happens to fit the Air. That’s too bad because I was considering it until I noticed that.
I’ve had various Zugu cases over the years and find them to be exceptional. The owner of the company, Tim Angel (I may have that wrong) will communicate directly with you if there’s a problem and replace anything you have an issue with. A few years ago he had a case coming out for one of the iPads and had taken preorders but ran into some production delays. So he sent out to everyone who ordered, another case that was similar. He told us all just to keep those and then got the new ones out a couple weeks later. I’ve never seen a company do that before. I can’t recommend them more highly. Great products and great company.