https://www.yahoo.com/tech/yahoo-security-alert-resetting-password-183402309.html
If you're a Yahoo user, you already know that 500 million Yahoo accounts were compromised by malicious hackers, and that you should reset your Yahoo password. What Yahoo didn't tell you was that you may also need to unlink, and then relink, all the mobile devices that access your Yahoo account. .... That's because if you check your Yahoo email or Yahoo calendar on a tablet or smartphone, that mobile device is permanently logged into your Yahoo account with a unique password that's different from your regular password.
I reset my "regular password" from my desktop PC in January of 2015, i.e., after the 2014 hack.
Periodically, with regard to my Android SmartPhone, I am asked to verify my PW. I do so using my "regular password."
Therefore, I am confused by the statement that my
mobile device is permanently logged into your Yahoo account with a unique password that's different from your regular password
Help please!