Add Yale Access Bluetooth integration (#23641)

source/_integrations/yalexs_ble.markdown

@@ -0,0 +1,59 @@
+---
+title: Yale Access Bluetooth
+description: Instructions on how to integrate Yale Access Bluetooth devices into Home Assistant.
+ha_category:
+  - Lock
+ha_bluetooth: true
+ha_release: 2022.9
+ha_iot_class: Local Push
+ha_codeowners:
+  - '@bdraco'
+ha_domain: yalexs_ble
+ha_config_flow: true
+ha_platforms:
+  - lock
+ha_integration_type: integration
+---
+
+Integrates [Yale Access](https://www.yalehome.com/us/en/products/smart-technology/yale-access) Bluetooth devices into Home Assistant.
+
+{% include integrations/config_flow.md %}
+
+The Yale Access Bluetooth integration will automatically discover devices once the [Bluetooth](/integrations/bluetooth) integration is enabled and functional.
+
+Devices must have a Yale Access module installed to function with this integration if one is not already built-in.
+
+## Supported devices
+
+- YRD216
+- YRL216
+- YRD226
+- YRL226
+- YRD256
+
+## Limited support devices
+
+These devices do not send updates, but can be locked and unlocked.
+
+- Conexis L1
+
+## Push updates
+
+Some locks only send push updates when they have an active HomeKit pairing. If your lock is not sending push updates, ensure it's paired with a HomeKit using an iOS device or the HomeKit controller integration. The lock cannot be paired via HomeKit Controller and the Yale Access Bluetooth integration on the same Home Assistant instance as they will both try to access the lock simultaneously and fail.
+
+Alternatively, call the `homeassistant.update_entity` service to force the integration to update the lock state.
+
+## Obtaining the offline key
+
+The offline key and slot number are required to operate the lock. These credentials reside in the Yale Access app storage on iOS or Android devices with owner access to the lock.
+
+The Yale Access app will only save the offline key to your device's filesystem if AutoUnlock has been enabled and used at least once.
+
+### iOS
+
+- Using [iMazing](https://imazing.com/) or [iPhone Backup Extractor](https://www.iphonebackupextractor.com/), find the backup files for the Yale Access app.
+- Look in the `Library/Preferences` `.plist` files for the Yale Access app and find the one with the value of `key` and `slot` using `Xcode` or any binary `plist` viewer.
+
+### Android
+
+Root access is required to read the `key` and `slot` stored in `/data/data/com.august.luna/shared_prefs/PeripheralInfoCache.xml`