Managers have received info about compliance tracking for hybrid. The long and short of it is that the tracking isn't going to be very effective. There are a lot of allowances for manager discretion. It keeps making references to "compliance is reported in ranges" to take into account travel, time off, sick leave, etc.
Also, it's mentioned that if your location doesn't have a badge reader: "We do not have a way to systematically account for onsite attendance where no badge reader is available, so we will use the honor system and trust that you are adhering to the policy."