The screen application can be run via the terminal command interface.  Start and type "ls /dev/tty.*" to list the serial devices to find the one you want to connect with.  Then type "screen /dev/ 57600" where xxx is the chosen port name.

To end the session type control-a followed by control-\.

The wireless Bluetooth port can be used if the reader has a Bluetooth serial adapter.  Use the OSX Bluetooth control panel to pair with the adapter and it will be shown in the /tty/dev list.