This blog post explores the flip side of IoT technology that innovatively transforms daily life: security and privacy issues.
At 6 a.m., still early for commuting, but upon receiving news of traffic congestion, the smartphone analyzes its owner’s sleep duration, tossing and turning during sleep, body temperature, and sleep patterns to wake him at the optimal moment in his sleep cycle. Upon learning he’s awake, the coffee pot prepares a perfect cup for him to enjoy now. Meanwhile, his car adjusts the interior temperature to his preference while he sips his coffee and analyzes the least congested route, preloading the navigation system. This scene seems like something straight out of a movie. Yet scientists predict it will become reality soon, and some implementations are already enriching our lives. What exactly is this technology that will make people’s lives so much more convenient?
The technology described above is called the ‘Internet of Things (IoT)’, meaning devices are interconnected via the internet. According to Wikipedia’s definition, “IoT refers to a network of connected objects—particularly those containing electronic circuits, software, and sensors—that can exchange data with manufacturers (businesses) or other devices to provide enhanced value and services.” In other words, IoT collectively refers to technologies where physical objects become active participants through autonomous collaboration, exchanging information with each other. This enables them to autonomously respond to the real environment according to their own processes, even without human intervention.
Realizing this technology requires several essential technical elements. Among these, the technologies necessary for effectively utilizing IoT can be broadly categorized into three main areas: Sensing, Network, and Service Interface. Briefly examining each: Sensing refers to the capability of acquiring information from objects and their surrounding environments. This is achieved through remote detection using various sensors (e.g., temperature, humidity, heat, light intensity, ultrasonic sensors) or through location and motion tracking. This acquires more diverse information than conventional sensors and is utilized in IoT technology. Network refers to the technology for building wired and wireless communication and infrastructure to support end-to-end services between objects. Examples of such technologies include Bluetooth, 3G and 4G, Wi-Fi (Wireless Fidelity), and WPAN (Wireless Personal Area Networks). Finally, Service Interface refers to the technology that stores information for providing IoT services, processes acquired information, and converts it for transmission to other objects. Examples of such technologies include big data technology, primarily responsible for information collection, and higher-level services like security and privacy management, which address issues during information exchange between objects.
These technological elements converge, enabling IoT applications across diverse fields. Let’s explore the IoT world through an example from Home IoT, which is commercialized and frequently used in daily life. If asked to name the most widely used IoT product in the US, the Nest thermostat comes to mind. In Korea, temperature control is still often managed manually. People turn on the air conditioner in summer and the heating in winter, operating these devices by hand each time. When leaving home, people must turn heating on and off to save costs. Nest learns the user’s temperature control habits and later adjusts automatically (Sensing). Connected to the internet, it identifies outdoor weather and the homeowner’s current location (Networking). Based on this, it independently turns heating on and off, managing the home’s temperature itself. It also informs the homeowner of this information or transmits it to other devices, enabling them to utilize the data. Now further developed, it can individually regulate temperatures throughout the home.
Thus, Home IoT provides users with a better environment through information exchange between devices. However, this IoT also has challenges to overcome. A major drawback is security concerns. Since the interconnected devices can monitor the home’s internal conditions in real-time, hacking could potentially invade the user’s privacy. Furthermore, as many companies are jumping into this recently spotlighted business, the lack of standardized specifications leads to poor compatibility between devices. These issues must be resolved for the Internet of Things to become commercially viable.
Moreover, IoT technology is driving innovation in the medical field. For instance, smart medical devices monitor patients’ vital signs in real time and automatically share this data with medical staff, enabling faster diagnosis and treatment. Continuous monitoring of patients’ health status also greatly aids in managing chronic diseases. Wearable devices allow patients to manage their health without frequent hospital visits, significantly improving their quality of life.
Although the term IoT is still unfamiliar and not widely known to many people, it has already become deeply embedded in our lives. It makes things we’ve only seen in science fiction movies possible and makes our lives more convenient. While it is still at the development stage and has shortcomings for commercialization, as discussed earlier, it will soon become deeply integrated into our daily lives.
