Barix AG of Zurich, Switzerland, enables voice paging via iPhone and iPad with the Barix Wi-Fi Paging App, available in the iTunes App Store. It enables zoned voice paging from iOS devices on commercial, public, and residential properties. The open-standards approach turns nearly any VoIP or IP audio receiving device into a simple IP paging/announcement system. Users download the app and add existing paging receivers, such as IP phones, IP speakers, or VoIP paging gateways. They can assign photos to each device or zone to create clear visuals for the paging targets. Users can make announcements to one, many, or all targets.