An i-pass is like a special sticker that goes on your car that helps you pay for tolls when you drive on certain roads or bridges.
You know how sometimes when you drive on a big highway or bridge, there's a toll booth where you have to stop and pay money? Well, with an i-pass, you don't have to stop or even have money with you!
When you have an i-pass sticker on your car, the toll booth knows who you are and your i-pass account automatically gets charged for the toll. It's like magic!
So instead of stopping and waiting in line to pay, you can just keep driving and the i-pass takes care of everything for you. This is especially helpful if you drive on these roads a lot, because it saves time and is more convenient.