Here's how I figured it could work:
- Mid-tier in pricing, low PDS load.
- Installed somewhere around the eyes or head, probably not shown in nakeds unless the player fluffs it themselves.
- Players are given a new command to write a few lines of information about their character's personality, behaviours, etc. This could also appear in character creation and possibly replace the Briggs-Myers thing.
- Whenever you have the cyberware installed and someone speaks directly at you, the game rolls behind the scenes (perhaps a skill/stat check, not entirely random) to determine whether one line of that character's personality is revealed. This way, the longer you talk to someone, the more of their personality it reveals to you. This also means that you should write the more base elements of the personality first, and leave the vulnerabilities and really telling stuff for the last sentences you write.
-To prevent spam, the personality stuff could appear at the bottom of the character's description when you look at them, and when you unlock a line, you could get a flavorful message like 'You feel your cognitive functions sharpen as you listen to %o. %o's psyche is a little clearer to you now.'
-Perhaps the pheromones nanogenic disrupts this cyberware's usage or makes it not work entirely, which would also give a relatively unpopular nano more of a reason to be used.
I feel like this would have a ton of potential for really cool social and manipulation RP, and even offer a bit of an edge for non-combat characters to have their own power over people. It would even be helpful for GMs to quickly understand player characters better without having to dive into a possibly very long backstory and notes and all that.