Chatting during a Test !?!

Chatting during a Test !!! How is that possible?

It is very simple. First, let's find out what can you do that will not bother the proctor, (or warden !!). Then, we will have to find how we can agree on the meaning of these signals in an easy way (if it is very hard, it could have been easier studying).

An important note first. This is for proving to ourselves we can cheat if we want to, but we don't. It is totally different than not cheating because we can't, right ?

Permissible acts and signals:

There is a lot of things we can do here (and you will add a lot also):

• Coughing or sneezing (which one you did is another piece of information)
  
• Dropping a pen
  
• Stretching your arms
  
• Go to the restroom
  
• Tap with the pen, how many times??
  
• Finish early and leave! (obviously, helping others, not yourself anymore!)
  
• At what time will you do any of the above, and how many times.
  

Agreeing on the code:

Let's take coughing as an example.

You can cough once every 4 minutes. Which minute, indicates your answer to one of the multiple choice questions (assuming 4 answers).

So in a 2-hour exam, you can send 120 min/4 = 30 questions (not bad, huh !!)

Can we do better? Sure we can :)

Using simple binary coding, we can send much more (twice in our case).
Every two minutes are for a single question (instead of 4).
If you didn't cough: Answer A
If you coughed once in the 1st minute: Answer B
If you coughed once in the 2nd minute: Answer C
If you coughed twice: Answer D
We have 60 questions in the 2hr exam.
quite simple... But lots of coughing is not good... Might raise suspicions. :)

So, let's use another signal. "Stretching your arms" for example:
Now, we can use coughing 0 times, or once every 4 minutes (as before): 4(+1 don't know the answer) options.
Also, you can, during the same 4 minutes, stretch your arms to the side, or above you, or both, or simply don't stretch them. Another 4 options.
Multiply these together. You have 16 options in all !!! That's 2 MC questions (with all of their 16 combinations, if each have 4 choices).
The same as before: in our 2-hour exam, 60 questions can be answered... That's quite great. With much less coughing and a little bit of stretching :)

Of course essay questions is a mess to do. But what do you think..we can a lot of other signals, you can literally dictate an essay this way :)