Used this again this morning at DHS. Absolute nightmare. As I was walking up to the touch points, two huge groups ran from a longer regular line into the AP line in front of me. They couldn't figure out how to scan their cards and do the fingerprint as I stood there impatiently waiting. It was honestly incredibly frustrating that people are taking advantage of this without being a passholder. It feels like a Disney just decided to do this to say "hey look we're doing something for AP holders!". In reality they just threw up a sign on some touch points without bothering to reinforce it. I don't expect any special treatment because I am a passholder but if you're going to offer something for convenience, make it convenient. Someone will likely argue that because it's a busy time of year they aren't enforcing it when the whole point is to get AP holders into the park faster which this fails to achieve.
We've totally had the same experience. AK is by far the best because they have a person up front where you enter the line asking if you're an AP holder. However, it's difficult to tell, because if you have a Magic Band, there is nothing distinguishing one from another. Once they get to the touch points, it becomes clear some (or many) are NOT.
At MK, the CMs simply don't care. The first time we used it there, we waited about 10 minutes because everybody before us was NOT a Passholder, whereas the regular lines made it through in half the time. Once we made it through, we asked one of the CMs holding the Ipads why non-Passholders were in line and they said they don't check and often suggest other guests get in line if few are there, which is what happened right before we arrived. She said it was a test and we said it was a FAIL because it's not being treated as a dedicated line. The second time we went to MK, the Passholder line was at least 20 deep, meanwhile, we chose to go through the regular line which had zero people in it. We talked to Guest Relations about this and said if you're going to do it, enforce it, otherwise, what's the point. More often than not, it has taken longer to get through the AP line.
It used to be that Disney were the Kings at corralling people through seamlessly whether it be parking, entering or getting on rides. It sure seems their abilities have more than diminished and much of it is because they don't follow through and enforce their own rules and guidelines. That goes for a LOT of things that occur in the Parks.