MIT student Dhairya Dand has designed smart ice cubes to let drinkers know if they've gone past their limit

It can be tough to know when you’ve finally had enough to drink, since by the time you’ve reached your limit you are no longer thinking coherently. It’s often up to friends, fellow patrons or even the bartender to keep you from downing yet another drink and keeping you from harm’s way. Not only is it an embarrassing experience but one that can potentially damage your relationships and reputation down the line. Those days might soon be over now, thanks to special smart ice cubes created at MIT.

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