An IoT-enabled smart attendance system built using RFID technology, the ESP32 microcontroller, and a LAMP stack. This system not only tracks attendance but also controls access through a solenoid lock ...

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It was so strange that the program just hang at this point, and I discovered that this is a deadlock issue. int avail = request.available(); LOGD("available: %d", avail); this is safe. I've made a ...

Abstract: In a shopping mart, imagine ten people waiting in line. If the first five people have many items in their carts, the last person with only one or two items may wait a long time to pay. To ...