I live in Indiana, but I am originally from Illinois (and I shop both iL/IN regularly), so I have Illinois' version of the EZ Pass, I-Pass. The devices are identical in size and shape, and I-Pass is flawlessly interchangeable with EZ Pass locations. The local Jewel Osco stores sell them, as well as the clear, plastic, windshield-mountable holders for them.
The one convenience of the I-Pass is that I get 1/2 off certain tolls in Illinois with it. As a result, l just periodically update the address and billing credit card that's on-file. There initially was a small fee to activate the I-Pass (since I did it at Jewel Osco vs. ordering one online or picking it up at an Illinois Tollway Oasis center), but it was convenient for me and I've more than earned back that fee in 1/2 off tolls. There is no additional/continuous fee charged for having the device.
I know that many of the toll booths in Indiana still require a stop-n-go even with an I-Pass/EZ Pass device, but the majority of Illinois toll plazas either have express lanes for device owners and/or allow you to continue down the highway without stopping or reducing speed while still wirelessly paying the toll.
Just in the time alone it'll save you over a year, let alone the 5 years I've lived in Chicagoland, make it a must have for every vehicle you own.
Edited 1 time(s). Last edit at 11/16/2019 11:38AM by timgordon2448.