Top 6 Applications for AI and IoT in Smart City Security

February 27, 2024

In the rapidly evolving landscape of urban development, the convergence of AI and IoT technologies holds immense promise for enhancing the security infrastructure of smart cities. By harnessing AI algorithms and IoT sensors, cities can detect and respond to security threats in real time, bolstering public safety measures and mitigating risks.

In this article on AI and IoT for smart city security, we delve into these technologies' innovative solutions and transformative potential for creating safer and more resilient urban environments. Uncover the synergies between AI and IoT to safeguard the future of our cities.

Read the article: 7 reasons to fall in love with smart cities

How AI and IoT boost smart city public security

The term "smart city" often refers to an image of a city with seamless physical and digital connectivity, sustainable housing, and efficient governance. Smart cities also play a crucial role in enhancing safety and security.

AI and IoT can lead to more effective and data-driven decision-making, improved urban management, and reduced environmental impact. Smart cities using IoT can offer benefits such as better transportation services and reduced energy consumption. Despite the significant advantages, there are challenges associated with smart cities, such as the need for substantial capital investment in technology and increased electronic waste.

Smart cities can also significantly enhance the provision of basic human necessities, including safety and security. This technology can help address societal, environmental, and economic challenges in an intelligent and resource-saving manner, ultimately contributing to a better quality of life for residents and benefiting businesses.

It is important to ensure that smart city technologies have pre-identified and necessary purposes, focusing on bringing tangible benefits to urban citizens.

Indeed, the world is gradually becoming safer, and many threats to people’s well-being still exist. Surprisingly, a huge source of these threats is often other individuals. Whether it’s organized terrorism, accidents, or planned robberies, people’s safety can be jeopardized by the actions of others. Preventing such incidents is crucial for smart city authorities, alongside ensuring access to necessities like food and water. To achieve this, governments can integrate IoT and AI technologies for physical security.

Don’t forget to watch the Smart City Automation with KaaIoT platform webinar to gain a better awareness of smart city solutions.

Top 6 IoT and AI applications for smart cities security

AI and IoT for citizen security in smart cities

#1. Robotic and drone integration

In physical security, combining IoT and AI technology not only eases the burden on security personnel but also introduces the possibility of AI-powered security robots replacing human law enforcement. These robotic units equipped with advanced sensors and cameras can patrol smart city streets, detect potential threats, and even prevent crimes through their presence alone. They excel in basic security tasks like crowd control and search operations, often outperforming human officers.

Meanwhile, human security personnel remain on standby, intervening only in escalated situations. Additionally, drones can be employed for surveillance in public spaces, alerting nearby security personnel to potential safety risks.

#2. Threat detection

Threat detection is a sophisticated process that involves AI algorithms and IoT sensor networks to monitor urban environments for potential risks and vulnerabilities. This technology enables smart cities to identify threats, such as criminal activity, natural disasters, or infrastructure failures, in real time or even predict them before they occur.

AI algorithms can detect patterns and anomalies indicative of potential threats by analyzing data streams from sources, including surveillance cameras, environmental sensors, traffic monitoring systems, and social media feeds. These algorithms can identify unusual behavior patterns, abnormal environmental conditions, or deviations from established norms, signaling the presence of a potential threat.

Once a threat is detected, automated alert systems can notify relevant authorities or security personnel, enabling them to respond promptly and effectively. AI-powered systems can optimize resource allocation and response strategies, ensuring a swift and coordinated reaction to mitigate the impact of the threat.

#3. Crowd management

Keeping public places safe, like busy streets, shopping areas, and transportation hubs, requires monitoring large crowds for potential security threats. It's difficult for security personnel to track every individual's activity, especially in crowded spaces. Identifying potential threats, such as someone carrying explosives or weapons, poses a significant challenge.

In a smart city, security personnel can utilize various IoT sensors to monitor for suspicious and potentially dangerous items. For example, scanning devices can detect objects made of specific materials and identify their shape, even if they are concealed. Real-time AI analysis of scanned footage helps determine if these objects pose a threat.

Moreover, crowd monitoring systems empowered by IoT and AI can track foot traffic in critical areas like footbridges. These systems maintain safe occupancy levels on bridges, enhancing people's safety. If footbridges become overcrowded, IoT systems issue warnings to the public and authorities, prompting necessary actions to manage the situation effectively.

#4. Video surveillance

Video surveillance in AI and IoT for smart city security involves the deployment of cameras equipped with advanced capabilities such as facial recognition, object detection, and behavior analysis. These cameras are connected to an IoT network, enabling real-time monitoring and analysis of video feeds from various locations throughout the city.

AI algorithms analyze video footage to detect and identify potential security threats, such as suspicious behavior, unauthorized access, or criminal activity. By leveraging AI-driven video surveillance, smart cities enhance their ability to detect and respond to security incidents efficiently, ultimately improving overall public safety and security.

#5. Access systems controlling

IoT and AI control access to highly secure areas like airports, banks, and government facilities. IoT-based security gateways restrict entry to authorized personnel, while additional layers of security, such as biometric scanning, further safeguard sensitive areas within these facilities.

Safety can be enhanced through IoT-based ticketing systems. Radio-frequency identification (RFID) technology can be integrated into tickets to strengthen security, streamline scanning processes, and improve reliability and ease of use. Alternatively, tickets can be stored digitally on smartphones, automatically interacting with security systems at airports to ensure only authorized individuals gain access, freeing up security personnel for critical situations.

#6. Facial recognition

Facial recognition in AI and IoT for smart city security involves advanced algorithms to analyze and identify individuals’ faces captured by surveillance cameras deployed throughout the city. These cameras are connected to an IoT network, enabling real-time monitoring and analysis of video feeds. 

AI analyzes facial features, such as the size and shape of the eyes, nose, and mouth, to create unique facial signatures for each individual. These signatures are then compared against a database of known individuals or watchlists to detect and identify potential security threats or persons of interest.

Facial recognition technology can be used for various security applications in smart cities, such as identifying known criminals or suspects, monitoring crowd movements, detecting unauthorized access to restricted areas, and enhancing public safety during events or gatherings. However, privacy concerns and ethical considerations surrounding facial recognition technology remain significant challenges that need to be addressed.

Read more about smart city solutions: IoT smart city solutions


In conclusion, integrating AI and the IoT in smart city security significantly advances urban safety and surveillance. By leveraging AI-driven analytics and IoT sensor networks, cities can enhance their ability to detect, prevent, and respond to security threats in real time. From advanced video surveillance and facial recognition to IoT-enabled access control and crowd monitoring systems, these technologies offer a comprehensive approach to ensuring public safety and security.

While deploying these technologies, addressing privacy concerns and ethical considerations is essential. With continued innovation and responsible implementation, AI and IoT have the potential to transform smart cities into safer and more resilient urban environments for all residents and visitors. See our smart pole live dashboard to learn how KaaIoT can make cities smarter.