Earlier this year, Google rolled out the "LOCKDOWN" feature on Google Quizzes. According to Google, this feature will block students from being able to open new tabs, thus preventing them from cheating.
I do find this tool useful for those that use this type of assessment. However, one question I would ask, Is this type of assessment the best way to assess what students have learned. I find myself moving away from question and answer based assessments and moving toward project based assessments. This philosophy is summed up by saying that I am moving away from having students tell me what they learned to having students show me what they learned, putting the skills to actual use.
Though I still see where the old style Q&A assessments can be valid, I am not sure that I would utilize this function often. I would encourage those using technology for assessments to think how to transform their instruction rather than how technology can be used to keep up what was previously done.