The Idea

The thought process was based on a gas detecting sensor that can detect and echo a value for alcohol.

Once the alcohol value was picked, the team decided to aim at young adults that enjoy going out drinking, or playing "drinking games" (example: drinking a shot every time a character says a specific word when watching a movie).
We also decided to target "punishment" for when someone has been drinking too much. Like the designated driver for example whom can't go over a certain level of alcohol.
The general idea, is to "remind" or "scare" the drinker as a harmless prank for the unsuspecting alcoholic. But it can be used to associate a certain level of drinking with shock.

Iain as the diabolical genius he is managed to find a simple way of shocking someone by reversing the charge, but this may be problematic as the drunker you get the less neurons are fired around your brain meaning you feel less pain. So to up the charge so the user would feel the shock would be too dangerous and very unethical. 

What happens is the gas sensor detects a certain value as well as carbon dioxide (to determine if its a human, or just a strong smell of alcohol) and then turn on the battery which was wired through the glass to send a current through the drink, and to the drinkers tongue to give them a very light shock.

First question: 

Is alcohol conductive? 

We tested it simply using a 9v battery and an LED light. 

Yes. The sugars in the drink allow conductivity. 

Second question

Is 9v enough?

No. There was no shock or even a static sensation from the drink. 

Third question

Health and safety

Unfortunately due to the rules that are part of the course, we are unable to add any more batteries or a higher voltage. 

The amps in electricity are dangerous, and it doesn't take a high amount to cause harm, even though we are working with low numbers, we are not authorized to carry out these experiments, and neither are our tutors. 

Fallback 

As this is a very short project, we are sticking with the alcohol detecting, with a result used to warn the user that they have had enough. Unfortunately this takes the fun out of the idea, as initially it was to be used for pranks or "whose the first to get the shock". Now it is simply "who gets the red light first".