A few days ago, I had to submit an assignment on Canvas, but because the computers weren't working, I asked my friend if I could borrow her phone so that I could submit it. The next day, I realized what I had done. My username and password were on HER phone, which means she has access to all my work, grades, tests, e.t.c. I'm worried that she might do something to my work, and I have signed out of Canvas several times on my computer, yet I do not know if I am stil logged into her phone. When I sign out of my Canvas on my computer, does it sign out of all devices?