Patent attributes
Disclosed are example methods, systems, and devices for allowing caller computing devices to authenticate calls via a service provider computing system. Users may opt to have entities register to contact the user with a positive ID, icon, or other notification on the user's computing device transmitted by the service provider computing system. A caller computing device may use a unique security token of the user to activate the notification on the user's device. The user device may be used to exert control over the security token via a service provider client application running on the user device. The caller computing device may initiate authentication via an API call to the service provider computing system. The caller computing device is able to have items (text, images, documents, etc.) delivered to the user computing device if authenticated.