In most Italian universities, grades are not based on homework but on a final (written and/or oral) text. There are different levels of what you are allowed to use during the written text (textbooks, notes, a limited amount of notes, or plain nothing), but definitely anything that can connect to Google is not authorized.
This would solve the problem completely, wouldn't it?
In fact, there is no (mandatory) homework at all: students may skip all the lectures, study on their own, and arrive prepared at the final test. When I first learned how heavy heavily universities abroad rely on homework problems (and how many TA hours are devoted to grade them), I was shocked. To my eyes, this method looked like high school, baby-sitting students through the coursework.
Granted, with the Italian system, some students get lost around the way, like in "drink and play World of Warcraft the whole day and then fail miserably". But at least those who don't, they learn how to organize themselves and work autonomously towards a goal.