Just deployed ATV's to conference rooms - the only things configured are Conference Room mode and requiring passcodes to connect. Everything seems to work nicely, but lately, I've been noticing that multiple rooms would have the Airplay passcode displaying on the screen. At first I chalked it up to some user mistakenly choosing the wrong device, but again, I've noticed it on several displays. And lastly, when a proper request to Airplay is sent, the device name is usually displayed with the passcode - these passcodes don't specify a device. Hoping someone else has seen this.
More info: Mixture of Gen4 and 4K AtV, all on 12.1.2.