Hologram ( Fallout : New Vegas ) Holograms are three - dimensional projections which sometimes interact with the player and non - player characters in Sierra Madre in 2281 . Characteristics . Gameplay attributes . The security holograms can be difficult to deal with , no matter your level or equipment used . They can be " destroyed " only by destroying or disabling their respective emitter . They can alternatively be reprogrammed to patrol different layers of the casino . Appearances . " Dead Money " . Holograms are present in the Villa , though most are non - hostile and you even have the option to activate several security holograms to guard Dean Domino during the quest Trigger the Gala Event . There is only one hostile hologram located in the Villa , it is located inside the Villa Clinic . Holograms are the primary enemy when you first enter the Sierra Madre Casino , and you are not able to shut them down due to the emitters not being accessible , so instead you must use the terminals to reroute their patrols . Later on , when you reactivate the power in the casino , the security holograms disappear and are replaced with casino floor managers , a cashier , bartender , and a lobby greeter . Reprogramming the starlet holograms in the Executive suites prevent them from becoming hostile . A hologram of Dean Domino can also be used to shut down the security protocols in the Tampico Theater . Holograms are also present in Sierra Madre vault , in the last room before you enter the Vault itself . " Old World Blues " . Two holograms appear in " Old World Blues " , in the Z - 38 lightwave dynamics research . The player cannot interact with them , and it was probably a prototype or a test subject for the scientists . Variants . Hologram . This version of the hologram is the main security version . They appear in the Villa Clinic and in the Sierra Madre Casino . It appears to be wearing Sierra Madre security armor . The emergency defense system activated these holograms when the bombs dropped , and they are still actively patrolling . The security holograms can also disguise themselves as other holograms . Hologram ( female ) . Generic friendly female holograms . One is seen during the quest Curtain Call at the Tampico . Starlet hologram . All the starlet holograms have the appearance of Vera Keyes . Unlike security holograms , Starlet holograms don ' t always attack the player , the exceptions being the hologram in Vera ' s room , and in the Executive suites . Outside the Sierra Madre Casino there ' s an additional starlet hologram , featured very prominently in the central non - functioning Villa fountain . If shot with the holorifle , they will instantly turn hostile . Hologram vendor . Throughout the Sierra Madre there are several vendors from which to buy various items , such as food and drinks . Vendor locations include the casino and cafe . This type of hologram will ignore attacks , and will not turn hostile towards the player character . Although they have no ( being pre - War tech ) , the vendors carry large quantities of pre - War money , which you can use to barter with them . Dean hologram . The Dean hologram is a stage - performing hologram found in The Tampico theater at the Sierra Madre Casino . During the quest Curtain Call at the Tampico , the hologram of Dean Domino will perform the song " Something ' s Gotta Give " , on the Tampico stage . After the song , he will receive some applause from hologram spectators , and subsequently disappear from the stage .