I just logged a feature request for this, but curious if others have input.  Please 'like' the feature request if you agree. 

Here is the description:

"I have a young family and we have eero plus to activate safe filters.  However, there is a loop hole.  It is common for kids to know the passwords to their parents iphone and if they can get on our iphone where we have the eero app, they can go in and change the settings without us knowing.  Even if you log out, they can have the verification code sent to that mobile device to log into the eero app.  Please enable a feature that closes this loop hole - maybe in addition to the verification code, you have to enter a password (which the kids would not know)."  

Kids are pretty smart these days and electronically savvy.