Introduction: According to the McMas Consultation, researchers from Disney, the University of Washington and Carnegie Mellon University use inexpensive, battery-free radio frequency (RFID) tags and Conductive ink, interactive on simple paper.
According to the McMess Consultation, researchers from Disney, the University of Washington and Carnegie Mellon University use inexpensive, battery-free radio frequency (RFID) tags and conductive inks. , to achieve interactivity on simple paper.
Currently, commercial RFID tag stickers are powered by RF energy, so no batteries are required and their unit cost is only 10 cents. By attaching this low-cost RFID to paper, users can paint with conductive ink and customize their own labels as they wish. In addition, the antenna can be printed using silver nanoparticle inks, allowing this adaptive paper to interact with local computing resources.
According to the types of interactions that users want to implement, researchers have developed different ways of interacting with RFID tags. For example, a simple sticker label applies to an on/off button command, and multiple labels drawn side by side in an array or circle on paper can be used as a slider and a knob.
Known as PaperID, this technology can be used for a variety of different applications, from pop-up books, to wirelessly triggering sound effects, to accessing print paper content, and more. Researchers even demonstrated how to control the rhythm of music with a paper baton.
Its working principle is to detect changes in low-level parameters when RFID channels communicate. Low-level parameters include: signal strength, signal phase, channel number, and Doppler frequency shift. The use of multiple adjacent RFID tags is primarily used to create a variety of basic elements for interaction and gesture recognition, allowing it to be used as a building block for higher-end interactions.
The research team also developed machine learning software that can be used to identify more complex gestures and higher-end interactions, including overlays, touches, swipes, rotations, flicks, and waves.
This PaperID technology can also be applied to other media and surfaces for gesture-based sensing. Researchers selectively perform partial displays on paper because it is ubiquitous, flexible, and recyclable, and is suitable for the intended goal of quickly and easily creating a simple, cost-effective interface for small-scale tasks.
(Original title: PaperID: Embedded RFID enables a piece of paper to be intelligently interconnected)
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