Robots are used in many sectors like construction, military, manufacturing, assembling, etc. Robots can be autonomous or semi-autonomous. Autonomous robots do not require any human intervention and can act on their own according to the situation.
IoT has taken off in a big way with companies like Intel, Google and Samsung all rushing for a piece of the pie. The existence of devices such as the Raspberry Pi and NodeMCU has also led to the existence of a significant hobbyist community.
There are number of communication technologies available for interaction between IoT devices today, and the most popular ones are Wi-Fi and Bluetooth. But the problem with Wi-Fi and Bluetooth technology is high power consumption.
The traditional method of taking attendance manually is very time consuming and often times leads to human error. The manual system is also prone to misconduct and the valuable work time gets wasted in organizing and structuring attendance data.