Chicago isn’t the only place doing this. It’s all over this country, and right here in California. When i began registering, i simply called ahead of time, made an appointment with my local police department and then updated my registration.
Now, that same place limits availability to a 2 hour window, once a week. If time frames are required on individuals for registration, then the registration office must remain open and staffed 24/7 to accommodate people who are willing to take any job they can get, even if that means night shifts or bad hours.
I personally know of three people who’ve been violated because it was impossible for them to follow the rules of registration. One of them is still in prison because of it and because of that, is no longer able to petition to be removed from Megans’ Law registry.