\label{Clicker_Registration}
LON-CAPA users can register their clickers by entering their clicker ID into the ``Register Clicker'' section of the Preferences screen which can be accessed from the Main Menu.  Below are instructions on how to find your clicker ID for various clicker models.

{\bf i$>$clicker}: on i$>$clicker devices, the clicker ID is located on a sticker on the back.

\begin{figure}
\begin{center}\includegraphics[  width=0.50\paperwidth]{iclicker}\end{center}
\caption{Location of Label on i>clickers}
\end{figure}

{\bf Interwrite RF}: on the RF version of the Interwrite clicker, you need to go through a number of steps. When you first switch it on, it will look for a class. Cancel that by pressing the asterisk key.
\begin{figure}
\begin{center}\includegraphics[  width=0.50\paperwidth]{interwrite1}\end{center}
\caption{Interwrite Step 1}
\end{figure}

Next, enter the menu by pressing the Left key.
\begin{figure}
\begin{center}\includegraphics[  width=0.50\paperwidth]{interwrite2}\end{center}
\caption{Interwrite Step 2}
\end{figure}

Scroll, using the Down key, to the entry Diagnostics.
\begin{figure}
\begin{center}\includegraphics[  width=0.50\paperwidth]{interwrite3}\end{center}
\caption{Interwrite Step 3}
\end{figure}

Press the Enter key to enter Diagnostics.
\begin{figure}
\begin{center}\includegraphics[  width=0.50\paperwidth]{interwrite4}\end{center}
\caption{Interwrite Step 4}
\end{figure}

The clicker ID is listed.
\begin{figure}
\begin{center}\includegraphics[  width=0.50\paperwidth]{interwrite5}\end{center}
\caption{Interwrite Step 5}
\end{figure}

{\bf Interwrite IR}: the clicker ID (6 digits) is located on a sticker on the back of the device.

{\bf Interwrite Virtual}: The clicker ID is the Media Access Control address (``MAC address'') of your network card. MAC addresses look like this

{\tt 01-23-45-67-89-ab}

or like this

{\tt 01:23:45:67:89:ab}

How to locate this depends on your operating system.

{\it Windows Vista}
\begin{itemize}
\item Click the Start Button and select Start Search.
\item Type {\tt cmd} in the blank box. Hit Enter.
\item In the command prompt window, type {\tt ipconfig /all}
\item Locate the number that goes with the adapter you would use in the lecture hall.
\end{itemize}

{\it Windows NT / 2000 or XP}
\begin{itemize}
\item After clicking on the Start Button, click on Run.
\item Type {\it command} in the blank box. Click on OK.
\item Once a small black window appears, type in {\tt winipcfg}
\item Locate the number to the right of ``Physical Address.''
\end{itemize}

{\it Windows 95/98/ME}
\begin{itemize}
\item After clicking on the Start Button, click on Run.
\item Type in {\tt winipcfg} in the blank box. Click on ``OK.''
\item Look under the info for the Ethernet adapter you would use in the lecture hall.
\item Locate the number next to ``Adapter Address.''
\end{itemize}

{\it Macintosh (OS X)}
\begin{itemize} 
\item Under the Apple menu, select "System Preferences".
\item Select the "Network" Pane.
\item Doubleclick on the adapter you are using, for example ``Airport'' or ``Built-in Ethernet'' (use the adapter you would use in the lecture hall).
\item Click on the ``Airport'' or ``Ethernet'' tab, respectively - the number is displayed.
\end{itemize}

{\it Linux}
Type {\tt /sbin/ifconfig -a} and look up the relevant info. For example:
\begin{verbatim}
[root@foo bar]# /sbin/ifconfig -a
eth0 Link encap:Ethernet HWaddr 01:23:45:67:89:AB
...
\end{verbatim}
The number is the HWaddr.