Do you have a drinking problem? Many of us do but don’t want to admit it. The BACtrack Mobile Breathalyzer is a cool gadget you can pick up to track your BAC and sharing your drinking habits. It measures how much alcohol is in your system and lets you share your results with others. You can also see other drunk geeks around the world. The BACtrack Mobile Breathalyzer is compatible with iPhone 4S, iPad 3 and above.