[Abstract] Applying a SkinMarks tattoo on a finger can control the phone, play music, and adjust the volume using wrinkles, freckles, or other skin features.
Tencent Digital (Yi Jing) has emerged as something new. It is a temporary electronic tattoo that turns body spots into touch-sensitive buttons that can control smart phones through wrinkles, freckles, or other skin features.
Martin Weigel, a researcher at Saarland University in Germany, said that there are bumps on the body and birthmarks. We are all very clear about ourselves. These signs can become touch-sensitive buttons. Squeeze the freckles and you can call back. Swiping your finger over the joint can change the volume of the music.
Weigel teamed up with colleagues at Saarland University and Google employees to create temporary tattoos using conductive ink and electrodes. These tattoos are called "SkinMarks" and are thinner than human hair. It can be applied to the skin with a little water tattoo and it will not fall off after several days of use.
Team member Jürgen Steimle said: "We use the elasticity of the skin, including its flexibility and stretchability." When the surface of the skin changes, the tattoo can be sensed and the researchers can implant it in one place. Multiple instructions.
For example, placing a tattoo on one side of the finger and sliding the other on the tattoo can adjust the volume of the smartphone. Curving the tattooed finger, the volume bar becomes a play, pause button. When the hand is in a fist, the tattoo on the joint can be turned into 4 buttons, and the function becomes a kind when the finger is stretched out.
There is also a touch-sensitive tattoo that emits light through the electric field, that is to say when the current passes. You can turn this tattoo into a logo that represents your favorite smartphone app. The tattoo will glow when the program receives the notification.
The researchers also put a heart-shaped tattoo on the birthmark of a volunteer. When the volunteer's lover can answer the phone, the tattoo will glow, and the touch tattoo will make a call.
Tattoo is connected to the computer during the test and can be connected to an Android phone in the future. Weigel said: "We now testify that the technology is feasible and the next step is to apply it to practice."
There is an obstacle to the use of technology: the size of the microcontroller is reduced and the tattoo signals are transmitted to computers and mobile phones. During the course of the study, the Weigel team used a copper band to attach the tattoo to the miniature Arduino controller. The controller was attached to the body through the wristband. Because the circuit board was clumsy, it was not very comfortable to wear in other parts of the body.
Chris Harrison, a professor at Carnegie Mellon University, said: “This is a remarkable study.†Someone had previously done an electronic tattoo experiment, but only put the device on a cheap temporary tattoo. Weigel's technology It can be used by artists, programmers, and enthusiasts.
Although there are limitations, Harrison believes that the next step in wearable devices is skin devices. He said: "It's quite flexible to move human fingers on your skin." The human palm can provide a larger surface than the smartwatch screen.
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