Passwords on sticky notes can be phished. They can also be lost or stolen. The advantage of security keys is that phishing doesn't work on them. Phishing is a l

Passwords on sticky notes can be phished. They can also be lost or stolen. The advantage of security keys is that phishing doesn't work on them. Phishing is a lot more likely for the vast majority of people than a thief both stealing their security key and knowing what to do with it.