It's common in China and some parts of Europe that they just use a license plate reader camera to log the time you entered, and another one at exit In China yo

It's common in China and some parts of Europe that they just use a license plate reader camera to log the time you entered, and another one at exit In China you just scan a QR code from a screen to pay and leave, but I think that could be replaced with a credit card reader or contactless payment. I don't see why it requires downloading an app.