Hologram

Holograms are projections of light that have largely replaced monitors and television screens in Rivera Federation's time. Many things are built to project holograms - RFVL suits, Stores, Benches, control panels, doors etc. If you look closely at Zero's suit, you will see a plate that does not sit flat and instead hangs out slightly. It is used to project holograms right in front of Zero.
Most visual and control technology appears to be hologram-based on board the RHM HailFire. The bridge is a prime example, with virtually all display monitors and control pads being holographic. Decks like engineering and the mining decks however employ older controls alongside holograms. This possibly hints that areas such as the bridge had been kept up to date in the HailFires's 62 years of service In the past when It used to be the USG Ishimura but the lower industrial decks had to rely on older technology.
There are a few different types of holograms.
==Rivera-Federation-Vid-Log==
This hologram is basically a video clip projected by a RFVL or monitor. They are usually used to send messages or display movies around the ship as communications or entertainment.
==Rivera-Federation-Audio-Log==
A recording of a person's voice. They are used in almost the same way as vid-logs, and they provide some of the backstory behind the game. Notable Audio-Logs include Mercer's Journal, Mercer and Kyne, and Temple's Logs.
==Text Log==
Text-Logs are used in the same way as Journals and Reports. Text-Logs are usually accompanied with an image. Like vid-logs and audio-logs, they provide backstory behind the game.
==Locator System==
The Locator System is a holographic line projected onto the ground by an apparent holographic projector embedded in the left palm of a RFVL. It is able to point the user towards a previously specified location useful if they are unsure of where to go next. The locator is probably used by engineers and miners to direct them towards destination, or to lead them back to their team if they are seperated.
==Gallery==
Image:Locatorsystem.jpg|The Locator System in action
Image:Dead Space holo.jpg|A tutorial hologram
==Sources==