What is it a tool for, it is a tool for observing while no person is present therefore breaking privacy.
Privacy, a state in which one is not observed or disturbed by other people.
Any tool is (as long as it exists) always used for right or wrong, good or evil. However what might be good or evil is very subjective. Both in the moment and looking back on the use of the tool. Therefore it might be best to consider not creating the tool at all, instead of the current we'll try it and see what happens rhetoric.