According to a recent ABC news article, an MIT graduate student invented an LED ice cube that tracks a person's alcohol intake by changing colors in response to the amount of alcohol consumed. An accelerometer tracks how many times the glass is raised to a person's lips and a timer estimates the person's intoxication level.
The LED light inside the waterproof ice cube has three different colors: green, yellow, and red. Green signals a first drink, yellow is a warning that your alcohol level is getting high, and red means to stop drinking. The ice cube can even send a text message to friends if the person drinking needs help by using a custom removable infrared receiver fitted to a smartphone's audio jack.
