You can get one on your phone too but it still doesn't solve the anonymity problem. Even if you get it on the phone you need to submit photo ID first :( Still a royal pain for tourists too.
They also (next year) want to stop the super easy 1,10 euro per trip (any trip any mode) tariff. Which also makes everything easy because there's no need to do an exit scan. Besides the hassle that the paper tickets were (they become unreadable if you look at them wrong) I don't really see any positives to this new system.
Besides that it has taken many more years and millions to introduce than planned. And it's already been hacked before it went live because someone didn't change the admin/admin passwords on the website... Gotta love government operations.