It’s an interesting idea. A drinking cup that changes color when (apparently) any one of a number of common rape drugs are added to the drink. To the extent it foils the plans of would-be rapists who use drugs, or chills the practice at all, it sounds positive. But a few things should be kept in mind:
-Most acquaintance-rape (by far the most common) is accomplished through the use of alcohol alone.
-There’s a real possibility that this product, if it becomes common enough, will create yet another “rule” that, if victims break it (i.e. by not using the cup or being attacked despite its use, as in an alcohol-only situation) they’ll be judged for not using it or not using it correctly.
-It may not be easy to use the drinkware properly in a dark bar, or after consuming alcohol regularly. It could create false sense of security.
Might be a step in the right direction. But there are potential unintended consequences.