Discover devices with Alexa app for YI/Kami cameras
In order to view YI/Kami cameras in Echo Show, you need to have an account with Amazon. If you have an Amazon Account sign in with that account. If you don't have an account with Amazon follow the steps at the bottom to create a new account.
If you log into the YI/Kami Home app with your Apple or Facebook account, you will not be able to link the account in the Alexa app. In order to link the account, you would need to create a new account in the YI/Kami Home app and pair your cameras on that account.
1. Launch the Alexa App, click on the More tab ( 
2. Select skills & games.
3. Click on the search icon and type the name of the camera app to find that skill. If you are using a Kami Camera search for Kami Home. If you are using a YI Camera search for YI Home.
4. Tap on Enable to Use.
5. Type the Camera app account login info. Make sure the email and password are correct. Click Login.
After you Login, Tap on Discover Device
Camera account login Discover Devices
6. When the camera is successfully linked, click close. Then select Discover Devices.
Discovered Devices List of Devices
7. Once the device is discovered you can use the command, “Alexa, show (camera name)". A Kami camera can only be discovered with the Kami Home skill. A YI camera can only be discovered with the YI Home skill. To hide the camera say, "Alexa, hide (camera name)". Alexa can only show the name of the camera in the Amazon Alexa app, not the camera (YI/Kami) app.
8. Select Devices to edit the name of the camera. If there are multiple cameras with the same name, create a new name for each camera. Alexa can't display two cameras with the same name.
If you don't have an account, open the Amazon Alexa app and click on CREATE A NEW AMAZON ACCOUNT. The process for iOS and Android is the same except Android prompts a google page during the setup.
Account Sign-In Identify who you are
9. To create a new amazon account click on CREATE A NEW AMAZON ACCOUNT. Select your name to allow Alexa to identify with who you are.
Confirm Name Phone number verification
10. Confirm the first and last name. When asked to verify the phone number, enter a mobile number to verify account information during the setup process.
11. When asked to set up a device, select no, and follow the steps at the top to find the skill for the camera device you have.