I had a look and could only really see using cron to check for a mac every x mins, not sure how this would work with phones in sleep/power save mode. Would also like to see if there is a better way, like looking at a log for a certain event rather than running a script via cron every so often
I'm only looking to use it for monitoring when certain devices connect/disconnect from the network, so i know roughly when these devices enter/leave the building