One of the features of Matter is Multi-Admin which lets you share your Matter-compatible smart home device between ecosystems. Using this feature, it can be controlled by any or all of Apple Home, Google Home, Amazon Alexa, and Samsung SmartThings simultaneously!

In order to activate this, open the app of the smart home ecosystem you’ve already paired your Essentials to via Matter and follow the instructions below. Your device can always be paired with the Nanoleaf app using the original setup code present on the device, regardless of Matter pairings:

Apple Home

1. In the Home tab, tap on the light you want to share.
2. Scroll all the way down to the bottom of the control and settings screen.
3. Tap “Turn On Pairing Mode”.
4. A prompt will appear saying “Accessory Ready to Connect”.
5. Tap “Copy Code” and perform the following steps within 15 minutes
6. Open the app of the ecosystem you want to share the light with.
7. Begin the flow for adding a new device, select Matter if the device isn’t automatically detected, and paste the code from the Apple Home prompt into the manual pairing code input.

Google Home

1. Open the settings for the light you want to share by either of the following methods:
   1. Long press on the device card and tap on the gear icon at the top right
   2. Navigate to the Settings tab and tap on the device under “Devices, groups & rooms”
2. Tap “Linked Matter apps & services” and then “Link apps & services”.
3. Choose one of the provided options:
   1. If the app for the ecosystem you want to share the light with appears in the list, tap it and you’ll be walked through the remainder of the flow.
   2. If the app you want to share with does not appear and you want to pair with an app on the same phone/tablet, tap “Use pairing code” and then “Copy pairing code”. Open the app of the ecosystem you want to share the light with. Begin the flow for adding a new device, select Matter if the device isn’t automatically detected, and paste the code from the Google Home prompt into the manual pairing code input.
   3. If the app you want to share with does not appear and you want to pair with an app on a different phone/tablet, tap “Share with QR code”. Open the ecosystem app you want to share with on the other phone/tablet, begin the flow for adding a new device, and scan the new QR code.

Amazon Alexa

1. In the Devices tab, tap on the light you want to share.
2. Tap on the gear icon at the top right.
3. Tap "Other assistants and apps"
4. Tap "Add another"
5. Wait for the new setup code to be generated, then tap Copy.
6. Open the ecosystem app you want to share with, begin the flow for adding a new device, and enter the setup code provided by Alexa.

Samsung SmartThings

1. In the Favorites or Devices tab, tap on the light you want to share.
2. Tap the triple dots at the top right and then “Share with other services”.
3. Choose one of the provided options:
   1. If the app you want to share with on the same phone/tablet appears in the “Available services” list, tap “Share” and you’ll be walked through the remainder of the flow.
   2. If the app you want to share with on the same phone/tablet does not appear in the “Available services” list, tap “QR code” then tap the 11-digit code to copy it to the clipboard. Open the app of the ecosystem you want to share the light with. Begin the flow for adding a new device, select Matter if the device isn’t automatically detected, and paste the code from the SmartThings prompt into the manual pairing code input.
   3. To share with an app on another phone/tablet, tap “QR code”. Open the ecosystem app you want to share with on the other phone/tablet, begin the flow for adding a new device, and scan the new QR code.