Great concept!  Not easy to use in all places
I thought this would be a great gift for my daughter when she left for college.  The one I kept at home installed easily enough, but the one she has on campus was not so easy.  They do not work for us.  Since it took a while for my daughter to decide it wasn’t going to work in her dorm and get it back to me, we missed the return window.  Very disappointed in this purchase.  Might work better for others.
Rating: 2 stars