Let me use my cameras as motion sensors

Last night at 3am my alarm went off. It had been in "home mode", and the motion sensor in the garage detected motion, triggering an alarm. Of course there was no sign of any issue when I went sleepily to see what happened.Theories? A spider in front of the sensor? A mouse? If only I could see what happened. If you let me use cameras as motion sensors I'd use that instead and been able to look in the app and see if anything was a concern without getting out of bed.Also your cameras are more sophisticated and have the ability to detect a person. Had it alarmed only on detecting a person that spider or mouse wouldn't have woken me up.