Realize the thing that watches the thing is also slowly consuming it, to the point of it being necessary to actively monitor the monitor. (The BLE gizmo will slowly but surely drain your car battery. You must take action to recharge the battery when it eventually sends you an alert, because it will soon stop sending them to you.)

It also siphons data on your phone and sends it to China. Oh, and I bet that drains your phone battery. I can't think of a better anti-gift for the holidays. This gizmo is a rare triple consumer threat.