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+# Display
+
+Document Status: Working Draft
+
+See [Firebolt Requirements Governance](../../governance.md) for more info.
+
+| Contributor | Organization |
+| ----------- | ------------ |
+| Joe Martin  | Comcast      |
+
+## 1. Overview
+
+Content partners want to be able to get various details of the device, such as the make, model, chipset/SoC, and the type of device. These properties provide content partners with greater insight into the capabilities and characteristics of client devices.
+
+### 1.1. User Stories
+
+As an app, I want to...
+
+- Get the chipset of the device
+- Get the available and total system memory capacity of both the system and GPU, in kilobytes
+- Get the system uptime of the device, in seconds
+- Get whether the device is a TV, STB, or OTT streaming device
+
+## 2. Table of Contents
+
+- [1. Overview](#1-overview)
+  - [1.1. User Stories](#11-user-stories)
+- [2. Table of Contents](#2-table-of-contents)
+- [3. Constants, Types, and Schemas](#3-constants-types-and-schemas)
+- [3.2. Interface Types](#32-interface-types)
+- [4. Device Support](#4-device-support)
+  - [4.1. Device Uptime](#41-device-uptime)
+  - [4.2. User Idle Time](#42-user-idle-time)
+  - [4.3. Free and Total Memory](#43-free-and-total-memory)
+  - [4.4. Chipset/SoC](#44-chipsetsoc)
+  - [4.5. Device Type](#45-device-type)
+
+## 3. Constants, Types, and Schemas
+
+## 3.2. Interface Types
+
+The Firebolt `Types` module **MUST** have an `DeviceType` enumeration:
+
+- `ott`
+- `stb`
+- `tv`
+
+## 4. Device Support
+
+Apps need to know various properties of the device.
+
+These will be surfaced in the `Device` module.
+
+### 4.1. Device Uptime
+
+The `Device` module **MUST** have an `uptime` method that returns an integer denoting the system uptime, in seconds (since last boot).
+
+Access to this method **MUST** require the `use` role of the `xrn:firebolt:capability:device:info` capability.
+
+```javascript
+Device.uptime()
+//> 86400
+```
+
+### 4.2. User Idle Time
+
+The `Device` module **MUST** have a `userIdleTime` method that returns an integer denoting the time elapsed since last user interaction, in seconds.
+
+The user idle timer value **MUST** be reset to zero each time the user interacts with the device.
+
+> TOOD: Add a note about what types of events reset this time.
+
+Access to this method **MUST** require the `use` role of the `xrn:firebolt:capability:device:useridletime` capability.
+
+```javascript
+Display.userIdleTime()
+//> 600
+```
+
+### 4.3. Free and Total Memory
+
+The `Device` module **MUST** have a `memory` method that returns an object denoting the device's current memory consumption and total capacity, in kilobytes.
+
+Access to this method **MUST** require the `use` role of the `xrn:firebolt:capability:device:info` capability.
+
+```javascript
+Device.memory()
+//> {
+//>   totalSystemMemoryKb: 999...
+//>   usedSystemlMemoryKb: 999...
+//>   totalVideoMemoryKb: 999...
+//>   usedVideoMemoryKb: 999...
+//> }
+```
+
+### 4.4. Chipset/SoC
+
+The `Device` module **MUST** have a `chipset` method that returns a string denoting the chipset/SoC of the device.
+
+Access to this method **MUST** require the `use` role of the `xrn:firebolt:capability:device:info` capability.
+
+```javascript
+Device.chipset()
+//> "BCM2712"
+```
+
+### 4.5. Device Type
+
+The `Device` module **MUST** have a `type` method that returns a `Types.DeviceType` value denoting the device type.
+
+Access to this method **MUST** require the `use` role of the `xrn:firebolt:capability:device:info` capability.
+
+```javascript
+Device.type()
+//> "tv""
+```