ABSTRACT:
This is based on an automatic and precise door opening system based on human movement, sensing near the door. In places like hotels, Shopping complexes, and offices automatic door opening can be a tedious task and sometimes requires hiring a person just for the sake of opening door whenever a person arrives. This project proposes a system that allows for automatic door opening solution by sensing human presence near it. Our system achieves this functionality with the help of PIR (passive infrared sensors) sensors. Every live body emits some infrared energy. This energy is sensed by a PIR sensor from a good distance. This signal is then processed and door is opened and closed based on this data. When a living being arrives within the sensor range, it detects its presence and sends out a command that opens the door. The door then automatically closes after a specific time delay if there is no further motion near the door. The system can be later enhanced by integrating counter mechanism so as to keep track of the number of persons inside the facility. iot based projects 2021 2022
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ABSTRACT:
Near Field Communication (NFC) technology is being grown up at enormous speed. NFC technology provides the fastest way communicate two devices with in a fraction of second. This technology has only been implemented on smart phones so far. Like Bluetooth it works only in short range and data transfer takes place at very low speed. Several security issues are attached with NFC, which is a big concern. Security attacks liked at a corruption and modification, interference attacks and theft, are the most dangerous for the customer who is using his/her smart phone for payment purpose. Near Field Communication (NFC) is an emerging wireless technology that is designed to facilitate secure, short -range communication between electronic devices such as mobile phones, personal data assistants (PDAs),computers and payment terminals. The concept is simple: in order to make two devices communicate, bring them together or make them touch. NFC is one of the most exciting Technologies that revolutionize the working practices by increasing efficiency. It is often presented as replacement for barcode, but the technology has much greater potential such as individual serial numbers for each item and possibility to read these numbers at some distance. NFC is a technology being adopted in security field, business fields and in the medical field. This work has the objective to present a system for security based on NFC technology. The proposed system used contactless smart card to limit the entries of unwanted persons. Contactless smart cared has information stored in it which when come in the field of NFC reader it immediately read the information stored in card.
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