▁port ▁and ▁a ▁cable ▁to ▁be ▁plug ged ▁into ▁an ▁ordinary ▁elect rical ▁out let . ▁Dig isc ents ▁collected ▁thousands ▁of ▁sm ells ▁based ▁on ▁their ▁chemical ▁make up ▁and ▁their ▁spot ▁on ▁the ▁spectrum ▁of ▁sm ells . ▁Each ▁combination ▁of ▁chemical s ▁was ▁then ▁assigned ▁to ▁a ▁small ▁file ▁that ▁represented ▁that ▁specific ▁mixture ▁of ▁ing red ients . ▁The ▁file ▁is ▁then ▁embedded ▁into ▁a ▁website , ▁email , ▁or ▁computer ▁program . ▁The ▁user ▁triggers ▁the ▁sm ell ▁by ▁clicking ▁on ▁the ▁file ▁or ▁opening ▁an ▁email . ▁When ▁the ▁file ▁is ▁opened , ▁that ▁file ▁is ▁sent ▁to ▁the ▁Dig is cent ▁and ▁the ▁i Sm ell ▁will ▁emit ▁the ▁correct ▁combination ▁and ▁amount ▁of ▁chemical s ▁to ▁rep licate ▁the ▁requested ▁sm ell . ▁ ▁Pro totype ▁▁ ▁The ▁original ▁prototype ▁was ▁a ▁black ▁box ▁that ▁was ▁ 5 ▁inches ▁deep , ▁ 2 ▁inches ▁wide , ▁and ▁ 3 ▁inches ▁tall . ▁The ▁device ▁would ▁contain ▁a ▁cart ridge ▁which ▁held ▁a ▁set ▁amount ▁of ▁sm ells . ▁When ▁activ ated , ▁a ▁fan ▁will ▁start ▁su ck ing ▁in ▁air ▁through ▁the ▁rear ▁end , ▁and ▁blow ing ▁it ▁over ▁tiny ▁v ial s ▁of ▁oil , ▁being ▁select ively ▁he ated ▁based ▁on ▁the ▁desired ▁chemical ▁combination . ▁The ▁air ▁pick s ▁up ▁the ▁sm ell ▁and ▁is ▁sent ▁out ▁of ▁a ▁ 2 - inch ▁vent , ▁then ▁into ▁your ▁nose . ▁ ▁F la ws ▁ ▁The ▁fla ws ▁in ▁the