Stealth • 5m
Quite a gimmick. This won't be anyone's go-to choice because apart from the user or those provided with extra pair of glasses, no one would be able to see the display. At some point of time, a situation would definitely arise where there could be more than 2 spectators. You can't buy glasses for everyone. Not relevant until everyone has some sort of device equipped with them so that it can come handy at every situation.
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