Dilbert: Why didn't you answer my email? Boss: I didn't get it. Dilbert: My lie-detector app detected stress in your voice. I checked your email history on the server, and it confirms you opened my email. Boss: That could have been a hacker with my password. Dilbert: I'm checking the security camera footage for your office at that time. And there you are opening my email. Now will you admit you got my email? Boss: I'm seriously considering it.