Chromecast guest mode

Guest mode FAQs

 

Here are a few frequently asked questions about guest mode. If these don't resolve your questions, please ask members of our help community.

 

Introduction

How close do I need to be to a Chromecast in order to use guest mode?

The Chromecast only makes its presence known to devices within Wi-Fi range (typically limited to 7.62 m [25 feet]).

How will I know if guest mode is turned on for my Chromecast?
  • Only users connected to the same Wi-Fi can turn on the Chromecast to guest mode
  • If guest mode is on, your Chromecast will display a 4-digit random PIN on the Chromecast.
  • Alternatively, the user needs to be in front of the TV screen to see and enter the PIN.

 

Can I turn off guest mode?
  • Yes, you can turn off guest mode at any point from the Google Home app. Here's how to manage guest mode
  • If you have more than one Chromecast on your Wi-Fi network, select the Chromecast device where you want to turn off guest mode, then turn off Guest Mode from within device settings.

 

How does the Chromecast in guest mode make sure that only people in the same room can connect to it?

Chromecast transfers ultrasonic audio tones to authenticate. Ultrasonic audio does not go through walls, glass or even fabric. If the mobile device trying to connect to the Chromecast is not in the same room, it won't be able to hear the ultrasonic tones. You will also need to be in front of the TV screen to see the manual PIN.

Does every Google Cast-enabled app work with guest mode?
  • No. Google Cast-enabled apps that send local media from your phone or tablet to the Chromecast do not work with guest mode.
  • You will not see the cast icon in an unsupported app, even when you are near a Chromecast in guest mode.
Does guest mode work with Nexus player?

No. Currently guest mode is not supported on Nexus player.

Devices

How do mobile devices know that there is a Chromecast in guest mode nearby?

Chromecast in guest mode emits a special Wi-Fi and Bluetooth beacon. Your phone looks for this beacon and determines that a Chromecast is nearby.

How do mobile devices connect with a Chromecast in guest mode?

Chromecast in guest mode emits a special Wi-Fi beacon. Your phone looks for this beacon and determines that a Chromecast is nearby.

  • Chromecast will automatically transfer a randomly-generated 4-digit PIN to the mobile device seeking to connect to it via guest mode by playing short, ultrasonic audio tones that you won’t be able to hear.
  • If this audio pairing fails, the user needs to see the PIN on the idle screen of the TV that’s connected to a Chromecast in guest mode and enter the PIN manually.
Which devices support guest mode?
  • Guest mode can be turned on from the Google Home Android or iOS app.
  • Additionally, devices running Android 4.3+ or iOS8+ support casting to Chromecast in guest mode, without connecting to the same Wi-Fi network.

Settings

Does guest mode use mobile data for streaming from the guest’s phone/tablet?

No, when a mobile device connects to a Chromecast in guest mode, only minimal data is used to signal to the Chromecast. The Chromecast streams content using the Wi-Fi network to which it's already connected.

Can I use guest mode even if my phone or tablet is connected to a different Wi-Fi network?

Yes. If you are connected to a Wi-Fi network that's different from your Chromecast, you can still cast to a “Nearby device”.