I understand you can turn on a hologram in the lobby of the Sierra Madre and I presume it'll keep the ghost people out.
Can anyone tell me where to find the activation code for the lobby terminal?

Conrad as like "The" Conrad Verner? Cuz that's a question he would ask. And worded just like that.

Let's just say I had a major firefight with ghost people *around* the greeter hologram.

You have you to deal with all your companions in the madre first and then when you get back to the lobby use the front desk terminal and activate the security. Its a one time only thou, but its only needed once.

Thanks for clearing that up everyone.