On August 22, according to the Daily Mail, researchers at the University of Washington in the United States used a technology called "interactive scatter communication" to enable wireless connections between contact lenses and smartphones or smart watches, and to transmit health information. The principle of this technology is to turn the Bluetooth signal sent by the smart watch into Wi-Fi transmission information that the smartphone can receive. In fact, this technology is to hijack the Bluetooth signal and then use it to help meet the energy needs of many small devices, such as brain implants, contact lenses, and credit cards.
Sending data quickly consumes a lot of energy, and an alternative is needed to help these devices communicate with computers and smartphones. "For implanted devices, wireless connectivity can change how we manage chronic diseases. For example, contact lenses monitor blood sugar levels in the tears of diabetic patients," said Vikram Iyer, an electrical engineer at the University of Washington. When the blood sugar level drops, you can send a message to your smartphone."
For the first time, this study shows that power-constrained devices can also "communicate" with other computers via standard Wi-Fi communication technology. This technique relies on a communication technique called "backscattering," which allows the device to exchange information by reflecting existing signals. Vamsi Talla, an electrical engineer at the University of Washington, said: "Our technology is not about generating Wi-Fi signals, but creating Wi-Fi by using Bluetooth signals from nearby mobile devices."
Researchers use this technique to reflect transmitted signals between different devices, which they call "interactive scatter communication technology." They found that smart watches can be used to transmit Bluetooth signals to contact lenses with antennas. They turn the Bluetooth signal into a "single tone signal" that can be used to encode data as a Wi-Fi signal.
Computer scientist Shyan Gollakota said the new technology could also be used to make new smart credit cards. Credit cards will be able to communicate directly to facilitate transfers between consumers. Gracota said: "The ability to communicate with smart devices, such as credit cards, will unleash the power of ubiquitous network connectivity."
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