Engineers have developed printable metal tags that could be attached to everyday objects and turn them into “smart” Internet of Things devices.
The metal tags are made from patterns of copper foil printed onto thin, flexible, paper-like substrates and are made to reflect WiFi signals. The tags work essentially like “mirrors” that reflect radio signals from a WiFi router. When a user’s finger touches these mirrors, it disturbs the reflected WiFi signals in such a way that can be remotely sensed by a WiFi receiver, like a smartphone.
The tags can be tacked onto plain objects that people touch and interact with every day, like water bottles, walls or doors. These plain objects then essentially become smart, connected devices that can signal a WiFi device whenever a user interacts with them. The tags can also be fashioned into thin keypads or smart home control panels that can be used to remotely operate WiFi-connected speakers, smart lights and other Internet of Things appliances.
“Our vision is to expand the Internet of Things to go beyond just connecting smartphones, smartwatches and other high-end devices,” said senior author Xinyu Zhang, a professor of electrical and computer engineering at the UC San Diego Jacobs School of Engineering and member of the Center for Wireless Communications at UC San Diego. “We’re developing low-cost, battery-free, chipless, printable sensors that can include everyday objects as part of the Internet of Things.”
Zhang’s team named the technology “LiveTag.” These metal tags are designed to only reflect specific signals within in the WiFi frequency range. By changing the type of material they’re made of and the pattern in which they’re printed, the researchers can redesign the tags to reflect either Bluetooth, LTE or cellular signals.
The tags have no batteries, silicon chips, or any discrete electronic components, so they require hardly any maintenance—no batteries to change, no circuits to fix.
The team presented their work at the recent USENIX Symposium on Networked Systems Design and Implementation Conference.
As a proof of concept, the researchers used LiveTag to create a paper-thin music player controller complete with a play/pause button, next track button and sliding bar for tuning volume. The buttons and sliding bar each consist of at least one metal tag so touching any of them sends signals to a WiFi device. The researchers have so far only tested the LiveTag music player controller to remotely trigger a WiFi receiver, but they envision that it would be able to remotely control WiFi-connected music players or speakers when attached to a wall, couch armrest, clothes, or other ordinary surface.
The researchers also adapted LiveTag as a hydration monitor. They attached it to a plastic water bottle and showed that it could be used to track a user’s water intake by monitoring the water level in the bottle. The water inside affects the tag’s response in the same way a finger touch would—as long as the bottle is not made of metal, which would block the signal. The tag has multiple resonators that each get detuned at a specific water level. The researchers imagine that the tag could be used to deliver reminders to a user’s smartphone to prevent dehydration.
On a broader scope, Zhang envisions using LiveTag technology to track human interaction with everyday objects. For example, LiveTag could potentially be used as an inexpensive way to assess the recovery of patients who have suffered from stroke.
“When patients return home, they could use this technology to provide data on their motor activity based on how they interact with everyday objects at home—whether they are opening or closing doors in a normal way, or if they are able to pick up bottles of water, for example. The amount, intensity and frequency of their activities could be logged and sent to their doctors to evaluate their recovery,” said Zhang. “And this can all be done in the comfort of their own homes rather than having to keep going back to the clinic for frequent motor activity testing,” he added.
Another example is tagging products at retail stores and assessing customer interest based on which products they touch. Rather than use cameras, stores could use LiveTag as an alternative that offers customers more privacy, said Zhang.
The researchers note several limitations of the technology. LiveTag currently cannot work with a WiFi receiver further than one meter (three feet) away, so researchers are working on improving the tag sensitivity and detection range. Ultimately, the team aims to develop a way to make the tags using normal paper and ink printing, which would make them cheaper to mass produce.
The Latest on: Internet of Things devices
via Google News
The Latest on: Internet of Things devices
- Internet of Things-connected devices are inherently insecure, so to speak Tech Expertson January 24, 2021 at 1:48 pm
Internet of Things-connected devices are inherently insecure, so to speak Tech Experts Jan. 24, 2021 - Internet of Things-connected ...
- The IoT Cybersecurity Act of 2020: Implications for Deviceson January 22, 2021 at 4:21 pm
Last month’s passage of the IoT Cybersecurity Improvement Act of 2020 means all IoT devices used by government agencies will soon have to comply with strict NIST standards. While it’s a progressive ...
- Internet of Medical Things Market to Reach US$ 284.5 Billion by 2027 Globally | CAGR: 18.5% | UnivDatos Market Insightson January 22, 2021 at 8:00 am
A comprehensive overview of the internet of medical things market is recently added by UnivDatos Market Insights to its humongous database.
- Global Blockchain in Banking Sector Market - Internet of Things (IoT) devices, Blockchain-as-a service boosting market growth - by PMIon January 21, 2021 at 9:00 pm
The global blockchain in banking sector market accounted for US$ 759.5 million in 2019 and is estimated to be US$ 4112.5 million by 2029 and is anticipated to register a CAGR of 18.4%. The report ...
- Ars Technicast special edition, part 1: The Internet of Things goes to waron January 21, 2021 at 8:30 am
Welcome to a special edition of the Ars Technicast! Ars has partnered with Northrop Grumman to produce a two-part series looking at the evolution of connectivity on the modern battlefield—how the ...
- Industrial Internet-of-Things Market to Witness Stunning Growth | Amazon, Google, Apple, Cisco Systemson January 20, 2021 at 9:40 pm
Latest released the research study on Global Industrial Internet of Things Market offers a detailed overview of the factors influencing the global business scope Industrial Internet of Things Market ...
- DNSpooq bugs expose millions of devices to DNS cache poisoningon January 20, 2021 at 1:40 pm
Millions of devices could be vulnerable to DNS cache poisoning and remote code execution attacks due to seven security flaws in dnsmasq, DNS forwarding and caching software.
- How Will the Internet of Nano-Things (IoNT) Revolutionize Key Industries?on January 20, 2021 at 3:32 am
The Internet of Things (IoT) has had a significant impact on areas such as healthcare, energy, and industry. But even this modern technology can be upgraded to include nanotechnology and make current ...
- Global Internet Of Things (IoT) Revenues To Jump By 53% And Hit $677B By 2025on January 20, 2021 at 1:01 am
IoT has become one of the most important technologies globally, allowing seamless communication between people, processes, an ...
via Bing News