A noisemaker installed near a Metro entrance aims to get people excited . It was put in place after a late - night brawl , the building management company says . While the device is aimed at youths , this one is set for all ages , the company says . Washington ( CNN ) -- A new anti-crime technology has reached downtown Washington -- but so far , it 's getting a mixed reception . One passer - by said it might stop him from shopping at nearby shops .
A noisemaker installed near a Metro entrance aims to get people excited . It was put in place after a late - night brawl , the building management company says . While the device is aimed at youths , this one is set for all ages , the company says . One passer - by said it might stop him from shopping at nearby shops .