PT (Pigtail) Terminal is a utility application to talk to the Wifi to Serial adapter sold by Pignology, LLC. Using this app, along with a Pigtail, you can talk to serial devices over wifi. The device works in both Ad-Hoc and Infrastructure modes. The device ships in ad-hoc mode and can be up and running quickly.
Pigtail was originally created to talk to Amateur Radios for command and control but can be used with any serial device, including routers and switches.
NOTE: This app does absolutely nothing without the Pigtail device. More information about Pigtail is available here: http://pignology.net/pigtail