Canon imageCLASS MF273dw User Manual page 296

To set a password, select the [Set/Change Password] checkbox, and enter the same password in both
[Password] and [Confirm] using single-byte alphanumeric characters.
Printing or sending faxes with AirPrint now requires authentication, and only users who know the user name
and password of IPP authentication can use these functions.
5
Click [OK].
➠
The settings are applied.
6
Log out from Remote UI.
Linking with Mobile Devices
287