@Cameron Jones Thanks for posting in our Q&A.
In intune portal, there are some user logs under Users > Sign-in logs.
https://learn.microsoft.com/en-us/azure/active-directory/reports-monitoring/concept-sign-ins#view-the-sign-ins-log
To avoid any misunderstanding, we appreciate your help to answer Jason's questions. Then we will continue to discuss this issue.
If the answer is the right solution, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.