You can get a robotic finger for your smartphone

[Brad]

This uncanny robot finger for your smartphone will give you nightmares | TechRadar https://www.techradar.com/news/this-uncanny-robot-finger-for-your-smartphone-will-give-you-nightmares

Use this on the subway commute to freak out the other passengers.  Also I seem to remember either a B horror movie or Dark Shadows where this disembodied hand was crawling around and killing people.

[rcjordan]

Just what I need, something else to carry around.

[littleman]

Finger, or prehensile phone penis?

[ergophobe]

I thought you were going to say "Just what I need, a subway commute."

[Travoli]

2019 Apple acquires MobiLimb and launches iProstateExam?