➀ Researchers from UC San Diego have introduced a new method for passive data collection using repurposed RFID tags; ➁ These tags, which are commonly used for tracking in retail and logistics, can now be used for real-time environmental sensing without batteries or specialized equipment; ➂ The technology has applications in various fields, such as agriculture, athletics, and parking garages, offering real-time data collection and tracking possibilities.

➀ The article introduces an IoT-based entry and exit monitoring system; ➁ It uses RFID technology to track individuals entering and exiting a monitored area; ➂ The system displays real-time data on a web server and can be applied in various environments such as workplaces, events, and educational institutions.

➀ Chinese-made chips in RFID cards contain hardware backdoors that are easily exploitable. ➁ These chips are compatible with the Mifare protocol and are inherently insecure. ➂ Security researchers at Quarkslab discovered a backdoor in RFID cards by Shanghai Fudan Microelectronics, which could be used to clone cards quickly.

➀ An automatic login system using the IndusBoard Coin is described, which allows for seamless authentication without manual intervention. ➁ The system utilizes an ESP32 module on the IndusBoard to interface with various user identification hardware like RFID readers and biometric sensors. ➂ It can be programmed using the Arduino IDE to handle authentication logic and communication protocols, enabling secure and automated access to various systems.