For multi-pet households, you need one Fi Device and one Fi Membership per pet to track each pet remotely.
One Device and Membership Per Pet
Each Fi Device operates as its own mobile device, so we need to establish one line per pet. This enables you to monitor each pet's whereabouts.
A membership gives you access to the full capabilities of your pet's Fi Device, allowing Fi remote access to your pet's location and activity. The membership cost covers the GPS & LTE-M connection to your pet's Fi Device.