In retail, IoT is used to increase sales and improve customer service.

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Smart accounting systems systematize information about customer preferences and facilitate inventory optimization:

Smart shelves in supermarkets. Notify staff when the products on them are running low and send a request for replenishment from the warehouse.
Contactless self-service checkouts. RFID tags or computer vision cameras are used to recognize products - the customer enters the store, takes the goods and simply leaves with them, and the payment is automatically debited from the linked card.
Digital price tags. Stores can promptly change prices for specific products depending on the season, exchange rate fluctuations, current promotions and discounts, displaying updated information on digital screens.
Analyzing customer behavior. By analyzing customer routes, a retailer can update the layout of its sales areas and place product samples, advertising banners, or announcements of special offers in areas where people congregate the most.
Construction
IoT technologies monitor the condition of buildings, optimize resource consumption and monitor safety. Smart sensors reduce costs and signal problems and malfunctions, in particular:

Sensors on building structures (bridges, buildings, etc.) monitor vibrations, temperature, uk whatsapp number database humidity and loads – it is possible to quickly detect potential problems and take action before an accident occurs.
Sensor data on machine condition, fuel consumption, component wear and location helps optimize equipment utilization, plan maintenance and avoid downtime.
GPS sensors and cargo monitoring systems record the movement of construction materials and equipment in time, improving supply chain coordination and reducing delays.
Healthcare and Medicine
IoT allows monitoring the condition of patients in clinics remotely. Wearable devices such as fitness bracelets and smart watches transmit data on pulse, blood oxygen levels, physical activity and other health indicators. Doctors can receive this information in real time and promptly respond to changes. For example:

special bracelets for patients with chronic diseases monitor vital signs and alert doctors to potential problems;
Medical institutions are using IoT to automate the process of monitoring stocks of drugs and equipment.
Transport
IoT is used to optimize logistics and improve safety, transportation efficiency, and passenger comfort. Smart monitoring systems allow you to track the condition of vehicles, find optimal routes, and reduce costs. Here are some examples:

You can monitor the condition of various vehicle components (engine, suspension, brakes), warn about possible breakdowns and optimize the maintenance schedule.
Vibration and temperature sensors warn of the need for repair or improvement of road sections. Intelligent traffic lights automatically adjust their operating modes depending on traffic congestion, weather conditions and other factors - this prevents congestion and increases safety.
Passenger services. Up-to-date information on the arrival times of buses, trams and trains is available thanks to GPS systems and communication between vehicles and control centres. Using data on the loading of transport lines and passenger requests, it is possible to adjust the schedule and directions of transport.