Oh, damn.
This reminds me of a manga I adore by one of my favourite mangaka: Himitsu / (The) Top Secret, by Shimizu Reiko; the premise being that the protags are cops using exactly this technology to do exactly as described. If you want more ideas and explorations of ways it could be used and exacerbate the anxiety.
Despite knowing and loving that manga for over a decade, I'd never thought of a game application, so it makes me so happy to see this concept again from a completely different source and medium. Not sure I'll ever truly play this, although the safety tips and framing system seem very helpful and might make it secure enough for me... but at any rate, I loved reading it, love the concept, the writing and the formatting, love your work.