Method for controlling projector, projector, and display system

A projector comprising:

• an RF tag;
• and
• one or more processors programmed to:
• determine, when the projector is started up, whether a setting that permits a process of reading out setting information stored in the RF tag and configuring a setting on the projector based on the setting information is configured or not,
• determine whether a password requested to be inputted to an information processing device is at an initial value or not, when the setting information is written into the RF tag from the information processing device, and
• notify a user of a warning message when it is determined that the setting that permits the process is configured and it is determined that the password is at the initial value.

A display system comprising:

• a projector having an RF tag and one or more processors;
• and
• an information processing device that can communicate with the RF tag, wherein
• the processors programmed to:
• determine, when the projector is started up, whether a setting that permits a process of reading out setting information stored in the RF tag and configuring a setting on the projector based on the setting information is configured or not,
• determine whether a password requested to be inputted to the information processing device is at an initial value or not, when the setting information is written into the RF tag from the information processing device, and
• notify a user of a warning message when it is determined that the setting that permits the process is configured and it is determined that the password is at the initial value.