Video taping babysitter

Heather • 24| due with #2 in August 18’
Has anyone ever done this? I babysit a set of twins and this comes across my mind often while I'm at there house. I'm not worried a at all. I take care of there kids as if they were my own.. But just curious if anyone has video taped a babysitter? If so, what did you find out on there? Good/bad ?