Below are examples.Access control - Install remotely programmable smart key locks on external doors, such as on the door to the garage and the front door.

That can largely be avoided by planning ahead to keep it separate as possible,  and submeter or mitigate in other ways when not possible;  like apparently these days you can get programmable thermostats with a 'administrator' mode that will allow you to set a maximum temperature in case you end up sharing with a resident who likes to keep the house at 80 degrees with electric baseboard heat.