Near Real-Time People Count

Background

peopleCountStream is a Poly Lens GraphQL Subscription API that provides a near real-time count of the people present in a conference room. This simple, yet powerful API is designed to show live room occupancy, which can be used in a variety of different use cases. Some examples include automated room booking or releasing, adjusting lighting or room temperature, or visualizing live room occupancy.

Arguments

The peopleCountStream API needs the following arguments. The values are case sensitive.

Argument	Description	Type
`tenantId`	Unique identifier of your Poly Lens Tenant	`ID!`
`roomIds`	Unique identifier(s) of the room(s) to be monitored for change in people count; Array type argument; Accepts multiple room IDs to monitor	`ID!`

Fields

The peopleCountStream subscription returns the following fields.

Field	Description	Type
`count`	Updated count of people in the room	`Int!`
`roomId`	Unique identifier of the room for which updated people count is being returned	`ID!`
`tenantId`	Unique identifier of your Poly Lens Tenant	`ID!`
`updatedAt`	The date and time when updated people count is returned	`DateTime!`

`peopleCountStream` Subscription in the Poly Lens GraphQL Playground

Let’s say there are two rooms in your Poly Lens tenant that you want to monitor for people count. You can use the following peopleCountStream subscription.

See this subscription in the GraphQL Playground

subscription PeopleCountStream($tenantId: ID!, $roomIds: [ID!]!) {
  peopleCountStream(tenantId: $tenantId, roomIds: $roomIds) {
    count
    updatedAt
    roomId
    tenantId
    __typename
  }
}

Arguments passed for the above subscription

{
  "tenantId": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx55f9",
  "roomIds": ["xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx8497","xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx34e4"]

}

A snapshot of the response for the above query

// Response received at 23:20:11
{
  "data": {
    "peopleCountStream": {
      "count": 1,
      "updatedAt": "2023-11-17T17:44:00.000Z",
      "roomId": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx8497",
      "tenantId": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx55f9",
      "__typename": "PeopleCount"
    }
  }
}

// Response received at 23:20:11
{
  "data": {
    "peopleCountStream": {
      "count": 0,
      "updatedAt": "2023-11-17T17:46:00.000Z",
      "roomId": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx34e4",
      "tenantId": "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxx55f9",
      "__typename": "PeopleCount"
    }
  }
}

count returns the updated number of people in the room.
updatedAt provides the timestamp for when the people count changed.
The timestamp format is according to the ISO 8601 standard.

Important Notes

Supported Devices:

Studio X30
Studio X50
Studio X52

Required Subscription:

Poly Lens Premium

Summary

The peopleCountStream subscription API is just a small example of the power of the Poly Lens GraphQL Subscription APIs. We'll be updating this page with more examples over time. If you have specific content requests or questions, reach out to DL-DeveloperSupport@poly.com.

Background​

Arguments​

Fields​

peopleCountStream Subscription in the Poly Lens GraphQL Playground​

Important Notes​