I have an apple trackpad device (i.e. separate from the laptop) and I believe it uses a fake haptic feedback to indicate a "click" as opposed to a real mechanism. It's indistinguishable from a real click. HOWEVER, it makes my skin crawl when the driver doesn't register my click and there is zero feedback when I press down on it. It's like pressing down on the surface of my desk and it feels absolutely gross. This happens more frequently than I'd like.
Tangental: Reminds me how buttons in various places (I've noticed this in elevators and POS terminals) beeps when you press them. However, the beep is not really tied to the CPU registering the event but rather the button itself being pressed. Ie, sometimes when you press the button, it clearly beeps, but nothing happens. Not sure if it's a result of underspecification or cheaping out on the electronics or both.
With the "Magic trackpad 2" if you have it turned off, there is no haptic feedback. At the time I didn't know it was haptic feedback and I was so confused as to how the whole click was broken.
The trackpad 1 does indeed have a real click - the way it works is that the little feet that sit on the desk are tactile pushbuttons; clicking moves the entire trackpad while the feet click in. It's disappointing this was removed in the trackpad 2; it's a very satisfying mechanism.
