The ProPrompter Wired Remote with 25 ft Cable scrolls through the script in the ProPrompter app. at various speeds. The ProPrompter app. works on an iPhone, an iPad or an iPod Touch. The Remote connects in the audio jack of any of these and lets you pause/resume, speed up, slow down, cue forward, and cue backward. (All iPhones and all iPads are supported. The iPod Touch must be running iOS 4.x or later.)
The point of using a wired remote is to have complete reliability. Bluetooth and Wi-Fi remotes can get bogged down in heavily crowded wireless spaces. Also -- because the Remote plugs into an iPad or other device, it gets power from the device and thus doesn't use a battery.