There only one limitation for holopad access. You can't click it during "check bay-1" quest - after Jesora call you to repair the hacking device and till you come back to talk with Serok and take the quest to find Jesora. I did it on purpose to avoid bugs and because i bound the tutorial for bay-1 security door. Yeah, it kind of lazy-ass trick, but this holopad doesn't play some significant role in plot move on so i just used it.Feel like I'm stuck. There's a holopad that I can't decrypt because I need to recover my omni-tool, but afaik I already have it, and even spend the 20 tech to repair it
There's also a door in the same room requiring a keycard that I can't find no matter how hard I look