Well I'm a man so I wouldn't have a use for such an item, unless I had a treasure room and I needed a way to guard it. Just imagine a trap door and then your surrounded by those things.
Nah mate. You install it as the rectal scanner to access your treasure hoard. No thief is going to attempt that. Secretly its actually voice operated by "open the **** up"
I really liked Parasyte at first, but something just really put me off about it around the 12th episode. I don't know exactly what it is. Like the normally wimpy character just suddenly became an emotionless protector. Hell, the parasite had more personality than him by then. I'm not sure how it is now or how it ended, never watched past that, so I don't know if my reason is still valid or ever was. I liked Tokyo Ghoul even though it did essentially the same thing, but the character actually went through physical, mental, and emotional torment in a very short time span that made him snap and change who he was. Don't get me wrong, I think Parasyte is ******* awesome, I just didn't like the sudden change that came out of almost nowhere.