iWalkie is thin-client software used to convert internet-enabled handheld devices into soft radios with push-to-talk (PTT). iWalkie can be loaded onto iOS and Android devices to provide PTT communication over any cellular WWAN, Wi-Fi, or wireless data network – public or private. Users can be on any combination of wireless data networks anywhere in the world. With iWalkie, when used in conjunction with the SiteCAST and SafetyNET hardware suite, users are able to seamlessly communicate with all makes and models of two-way radio systems.