No, it is not password protected. I have complete ability to make changes to all settings. But, I have to wait the amount of time I've set for myself.
It really can work. As I mentioned, I'm at an 80 minute delay, and that seems OK. It's not really worth waiting an hour and a half to indulge my yetzer hara, and I guess that part of the beauty-- my yetzer hara knows this, and tends to back down.
It can make work-related things a bit more complicated. As an example, I registered for a webinar (this was about healthy eating, exercise, etc., so not urgent for work, although sponsored by my employer). When I tried to connect, I was blocked from the site. I set Pluckeye to allow that site, but obviously I had to wait. Sometimes, there's a multi-level waiting. One of our IT staff asked me to install TeamViewer so that he could install some software without coming in to our location. Right away, I was denied, so I asked Pluckeye to allow the TeamViewer site. After I waited and tried again, I connected with site 1, but the download tried to connect me to a slightly different URL, and I was blocked again. Pluckeye does have some human intervention setup for emergencies, but this is dependent upon chesed, basically. I'd say it provides great boundaries for me, and only very slight inconveniences.