Crimes against women is becoming a daily routine in our country, nowadays. An increased demand persists in developing safety devices for ensuring safe and secure environment for women. The main aim is to develop a “Virtual Friendly” device, to safeguard themselves while in trouble. The proposed system developed consists of GPS, GSM modem, Microcontroller (LPC812), RF transceiver, Temperature Sensor, Voice Recognizer. GPS Receiver gets the location information from satellites in the form of latitude and longitude. The Microcontroller processes this information and this processed information is sent to the POLICE control room. The temperature sensor senses the body temperature continuously. SMS alert will be sent in case of low temperature which indicates emergency condition. The system can be activated by the user by themselves, when they are in need of self-defense. Features such as Alarm sound, voice recognition are added to the system to ensure optimum efficiency. The voice recognizer circuit is used to send command with voice by using the codes SAVE ME and HELP ME. The device is designed as a portable kit and easily operated, so that any women can easily carry with them anywhere and everywhere.

Patients and old age people suffering from Chronic, systemic diseases like heart diseases, asthma diseases, Alzheimer and dementia, Kidney diseases etc. needs regular health monitoring and extra care during any emergency. During the world of pandemic, those people suffered a lot and needed more attention from expert/specialists. Due to the difficulty in consulting the expert specialists in person, wearable technology plays an important role, which evolved for ease of use and advancements for monitoring patient’s health status. So, a wearable health monitoring system using IOT is proposed to monitor the regular health parameters periodically. The proposed system is a single integrated device consists of sensors for measuring vital physical parameters like pulse rate, respiratory rate, and temperature. Those data and initial predictions are sent via IOT cloud platform and expert opinions are received for further action as remote monitoring. If any critical changes are found, the same has been transmitted to doctor end and closest people of contact. If temperature changes are found below or above the standard value about 97 to 99 F, along with any respiratory difficulties with abnormal values are brought immediately to the notice of the specialist, due to the recent treats in covid. The sensor values are monitored time to time and connected to Arduino with GSM module for alert message. The proposed patient health monitoring system based on IOT helps the doctors and family members to keep track of the patient’s health. The covid pandemic period also made us realize to monitor even normal healthy person, which is the need of the hour. Also, the unit is wearable, small in the form of belt/collar, light weight and cheap. The aim of the study is fulfilled, to prognosticate the possibility of unidentified or untreated health effects and monitor the patient health.

Today’s world is moving in such a speed that no person can spare a minute to stop and look what is happening. The rapid increase in population has inevitably increased the number of vehicles on road and more road accidents with life-loss. The report from World Health Organization (WHO) revealed that approximately 1.35 million people are losing their life each year, because of road accidents. The major reason for accidents is due to drunken driving, distracted driving, over speeding etc. Also, nearly 55% of the life-loss in the highways occurs due to the negligence of accident report of the passer-by vehicles especially during the night or in deserted places remain unnoticed till dawn. A person surviving from the accident, tends to lose their life due to lack of immediate medical response. A Vehicle Accident Emergency Alert system is proposed for immediate attention which could save their life. As soon an accident occurs the vibration sensor or the accelerometer present in the system, transmits the signals to Arduino controller. Latitudes and longitudes data are collected from the GPS system, passed using the GSM module to the emergency centre, and sends a text message to all the people listed in the emergency List. Getting the exact location would help the ambulance to reach the spot with shortest route and time. The proposed alert system could be implemented with less cost and incorporated in all vehicles in near future so that the rate of life-loss could be minimized.

Security is crucial in the healthcare industry. Between 2012 and 2019, almost 179 million health records were exposed to data breaches. The intruders got into homes and companies to take credit card and banking information, as well as health and genetic research data. Blockchain is a fantastic technology for applications in the area of protection because it can keep an incorruptible, decentralized, and open record of all patient data. It is, nevertheless, secure and keeps any person's identity hidden. When dealing with decentralized technology, patients, doctors, and hospital personnel may all share the same information. On a blockchain, the cost of verifying a single transaction is negligible. You can audit a single piece of data in real time, and it's entirely visible to everyone. As a result, costless verification is economically possible. Recent audits of healthcare data, for example, have necessitated the time-consuming and costly examination of tiny units of transactions. This procedure had to be interrupted and redone on a frequent basis prior to blockchains in order to comply with regulations. Compared to traditional healthcare information management solutions, blockchain provides five potential benefits. Blockchains are ideal for decentralized administration applications, such as when hospitals, consumers, and payers want to work together without the need for a middleman. The second advantage of blockchains is that they may offer immutable archives of sensitive data, which makes them ideal for static databases (e.g., insurance claim records). Blockchains are very useful for tracing the origins and histories of digital artifacts (e.g., patient consent in clinical trials). According to cryptographic protocols, changing the ownership of an item can only be done by the person who owns it. Furthermore, the attributes' origins may be traced, making previously confirmed evidence considerably more reusable. The fourth advantage of blockchains is that they ensure the longevity, consistency, and accessibility of records. As a result, they're perfect for long-term records storage and availability (e.g., the electronic health records of patients). Patients' personal keys encrypt the data, which is only accessible with their consent, making it safer and more private. There is no method to access personal information even if the network is hacked by a hostile entity.

The visually impaired/blind people face many challenges and seeks help from the other people even for their daily routine life due to various complications. Also, they could not go independently outside, even for their basic needs and mentally depressed due to their current inability. A wearable navigation system/device is proposed and developed to help the blind people as well as the partially blind people or challenged people. The devised unit/prototype consists of the displacement measuring sensor for the detection of the obstacles and depth. The data received from the IR and Ultrasonic sensor is feed into the Arduino UNO Microcontroller and it is processed. The output from the controller is given to the impaired people through the wireless voice playback modem, to alert them when they found obstacle or collision. The receiver end receives the corresponding current position values through the navigation systems and the static, dynamic condition of the impaired people is measured using mems accelerometer and the same information (latitude, longitude) is shared as SMS to their family members or guardian to monitor them, during any emergency. The proposed guidance cane is a cheap, simple, user friendly and smart device.