Fingers

We hear a lot about artificial hips and knees, but finger joints? They do exist, but their fit and functionality is limited. Germany's Fraunhofer research group aims to change that, with artificial finger joints that are 3D-printed for each patient.

If you were trying to gauge the reaction force of an insect's leg, you couldn't just push it with your finger – the size difference between the two would be too great. A set of hand-controlled soft robotic microfingers, however, can get the job done.

Back in 2016 we told you about a wearable device known as the Tap Strap, which lets users control Bluetooth-linked devices via finger-taps. Its inventors have now announced its sleeker and more capable successor, called the TapXR.

We've been hearing a lot about synthetic skins made for robotic hands, which would give the devices human-like qualities. Scientists in Japan have gone a step further, by covering a robotic finger in a self-healing skin made from live human cells.

It goes without saying that surgeons require a very delicate, precise touch. A new set of surgical training gloves were designed with that fact in mind, as they monitor their wearer's hand movements, and provide feedback on their technique.

Could an existing piano player adapt to playing the instrument with an extra, robotic thumb? A new study suggests that the answer is yes, and interestingly enough, even people who are new to the piano are equally adept at using the added appendage.

A few years ago a designer named Dani Clode introduced the world to the Third Thumb, a robotic finger controlled using pressure sensors under one’s feet. Now neuroscientists are using the device to investigate how our brain's adapt to extra limbs.

Currently, if you want a VR setup to "know" what your individual fingers are doing, you either have to wear special gloves or place your hands directly in front of a camera. A new system, however, keeps tabs on the fingers via a simple wristband.

It sometimes seems that as soon as another form of biometric ID authentication is developed, someone devises a way of fooling it. According to its creators, however, a new 3D finger vein-scanning system cannot be duped.

Capturing the complexities of the human hand is very tricky. Now engineers have developed a new wearable system that uses thermal sensors to accurately predict hand positions, with potential applications in VR, robotics and translating sign language.

Although there are already complex prototype interfaces that track all of the fingers on a computer-user's hand, let's be honest – it's mostly just the index finger that matters. That's where the experimental AuraRing system is designed to come in.

​Because it doesn't show up in either blood tests or brain scans, Parkinson's disease can be frustratingly difficult to diagnose. A new device could help, however, by repeatedly bending the patient's finger. It may make diagnoses easier, and allow treatment to start earlier.