Sidecar is a cloud service for Internet of Things applications. It can be used as a backend for wearable software infrastructure. The Provision API is used to manage application users and groups, notifications, access keys, and devices. Sidecar offers 3 pricing plans; one is for testing purposes. This API is REST based, and uses Access Keys, and Shared Secret Keys for authentication. Sidecar develops wearable devices that help people optimize health decisions.