Contact lenses can also connect mobile phones? See how they do it
According to foreign media reports, the research group of the University of Washington in the United States recently used "interactive scattering communication" technology to allow contact lenses to connect wirelessly with mobile devices such as smart phones and watches so that the contact lenses could transmit human health information to mobile devices.
The operating principle of this technology is to first convert the bluetooth signal of the smart device into an acceptable Wi-Fi signal, which belongs to the hijacked Bluetooth signal technology and then uses it to meet the information transmission needs of many small-sized devices, such as contact lenses and brains. Implants, etc.
Vikram Iyer, an electrical engineer at the University of Washington, said: "For implantable devices, wireless connectivity can change how people manage chronic diseases. For example, contact lenses monitor blood sugar levels in diabetic patients' tears. When the blood sugar level drops, it can send information to the smart phone. "
This study shows for the first time that power-limited devices can also interconnect information with other computers via standard Wi-Fi communication technology. Behind it is the need to rely on "backscatter" communication technology to allow devices to exchange information by reflecting existing signals. Vamsi Talla, an electronic engineer at the University of Washington, mentioned:
Instead of generating Wi-Fi signals, our technology creates Wi-Fi by using Bluetooth signals from nearby mobile devices.
University of Washington researchers use "interactive scattering communication technology" to reflect the transmitted signals between different devices. In their research, they discovered that smart watches can transmit Bluetooth signals to contact lenses equipped with antennas. They turn Bluetooth signals into "monophonic signals" and can be used to encode data as Wi-Fi signals.
Computer scientist Shyan Gollakota said the technology can also be used to create new types of smart credit cards. Information will be interconnected between credit cards to facilitate the process of transfer between consumers.
The core point of this technology is to enable the Bluetooth signal sent by mobile devices through the mobile device. After the conversion, the Bluetooth signal will generate Wi-Fi to access the network and connect with the mobile device.
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