Skip to main content

Give your phone the finger with this creepy, versatile robotic attachment

MobiLimb: Augmenting Mobile Devices with a Robotic Limb [UIST 2018]

There was a time in history when we thought that selfie sticks were the weirdest smartphone accessory that could ever exist. Now, an unusual, altogether unsettling new phone attachment will make you reconsider. Called MobiLimb, it’s a robotic finger that plugs into your smartphone and pulls itself along the floor by making beckoning motions. Imagine a new iPhone feature designed by The Evil Dead director Sam Raimi, and you’ll start to get the idea.

Recommended Videos

“MobiLimb is composed of five small servo motors, enclosed in a 3D-printed shell,” Marc Teyssier, a human-computer interaction researcher who helped create the device, told Digital Trends. “Everything is driven with an Arduino board, and it uses Android OTG connection for power usage and data transmission.”

For a device consisting of relatively simple tech, MobiLimb certainly manages to be creepily lifelike — as well as versatile. Along with dragging its smartphone “body” along a table, it can also wag like a tail, tap on a surface to indicate that a notification has been received, act as a flexible torch, and so on. Heck, if you so wished, it could even stroke your hand while you’re speaking on the phone. Because what better way is there to creep out your fellow commuters on the way home after a busy day’s work?

“The original starting point for this project was human touch for social communication, which is the topic of my Ph.D. thesis,” Teyssier continued. “In real-life communication, we use touch to communicate emotions with others. However, current technology doesn’t use touch as an information channel. This project is just one approach for how we can receive a remote touch. Another aspect of this work is the relationship we are building with our mobile devices. Because they’re always in our hands or pockets, smartphones are becoming companions for humans — yet right now they remain a cold and flat technology.”

The MobiLimb team created several versions of the finger, including the regular (as regular as it gets, at least) black plastic version, a furry one, and a flesh-like variant created with the help of a visual effects artist. The prototype is set to be shown off at the ACM User Interface Software and Technology conference in Berlin this month.

Don’t expect to be able to buy one any time soon, though. “We have no plans to commercialize it yet,” Teyssier said. “It’s a research project at a prototype phase. Its aim was to explore such devices — and judging by the reactions and comments on the internet, people are not ready to use it just yet.”

A paper describing the project is available to read online.

Luke Dormehl
Former Digital Trends Contributor
I'm a UK-based tech writer covering Cool Tech at Digital Trends. I've also written for Fast Company, Wired, the Guardian…
Finishing touch: How scientists are giving robots humanlike tactile senses
A woman's hand is held by a robot's hand.

There’s a nightmarish scene in Guillermo del Toro’s 2006 movie Pan's Labyrinth in which we are confronted by a sinister humanoid creature called the Pale Man. With no eyes in his monstrous, hairless head, the Pale Man, who resembles an eyeless Voldemort, sees with the aid of eyeballs embedded in the palms of his hands. Using these ocular-augmented appendages, which he holds up in front of his eyeless face like glasses, the Pale Man is able to visualize and move through his surroundings.

This to a degree describes work being carried out by researchers at the U.K’.s Bristol Robotics Laboratory -- albeit without the whole terrifying body horror aspect. Only in their case, the Pale Man substitute doesn’t simply have one eyeball in the palm of each hand; he’s got one on each finger.

Read more
This MagSafe iPhone rig aims to give your videos a more pro look
magsafe iphone rig moment filmmaking cage

Seattle-based Moment has been making carefully designed smartphone accessories for nearly a decade.

Our NEW iPhone Filmmaking Cage!

Read more
This LG robot could soon be serving your restaurant meal
LG's CLOi ServeBot robot.

When LG’s CLOi robot first came on the scene in 2018, it didn’t get off to the best of starts.

On stage at CES with former LG marketing chief David VanderWaal, CLOi clammed up at the worst possible moment, leaving VanderWaal to conclude that “CLOi doesn’t like me.”

Read more