It was fiddly but when it worked it was great having the watch let me in. However, their latest security level requires us to enter a number AND correctly click the correct button and that means a phone for now. As it is in the iphone app, microsoft's apple watch app was poorly designed. I like "Duo" the buttons are better. And, after someone has entered a correct code the app should just recognize this and end the charade (making me choose between "yes" and "no"). If it's "no", then I'm unlikely to enter any number code, much less the correct one.