Connected Field Service > Configuring Connected Field Service > Using Limited Access Accounts for Connected Devices > Creating Application Keys for Connected Devices
  
Creating Application Keys for Connected Devices
1. Create one or more ThingWorx Application Keys (appkeys) for the connected devices. Map keys to devices as appropriate for the installation:
One for all devices
One for each device
One for some subset of devices
2. Map the appkeys to one or more ThingWorx users as appropriate for the installation.
This could be a single appkey and user for all devices or one appkey/user pair per device or any combination in between. Ensure that all users associated with appkeys for any connected devices are assigned to the PTC.CSLM.Devices User Group. This will allow the devices to have a consistent and manageable set of access rights for any needed connected capabilities.