The Internet of Things: Much more than just a buzzword
Just a decade ago, talking about the Internet of Things (IoT) seemed to mean discussing an experimental technology that was still far from everyday use. Today, however, IoT has become an invisible infrastructure underpinning much of our industrial, urban and domestic activity. It is estimated that, by 2026, more than 20 billion connected devices will be in use worldwide, ranging from temperature sensors in logistics facilities to wearable devices that monitor cardiovascular health. IoT is no longer a concept for the future; it is a reality — a data layer upon which businesses are building smarter decisions, greater energy efficiency and enhanced security.
Image 1. Source: Shutterstock
IoT is about adding connectivity and intelligence to everyday objects — machines, vehicles, appliances and industrial assets — so they can collect data from their surroundings, communicate it and, in many cases, act autonomously. What began with RFID tags for inventory management has evolved into complex ecosystems where sensors, gateways, communication networks and cloud platforms work together to deliver real-time value.
An evolution accelerated by the growing demand for data
The evolution of IoT has been shaped by three major breakthroughs. The first was the miniaturization of sensors and microcontrollers, which made it possible to integrate sensing capabilities into virtually any object at an affordable cost. The second was the emergence of low-power communication networks specifically designed for devices that need to transmit small amounts of data while operating for years on a single battery. LTE Cat 1 bis, LTE-M, LoRa and Sigfox are examples of this generation of technologies. The third breakthrough — and the one we are experiencing today — is the convergence of IoT, artificial intelligence and edge computing, enabling devices themselves to process data locally and make decisions without constantly relying on the cloud.
This evolution has transformed entire industries. Manufacturing has moved from reactive to predictive maintenance thanks to sensors that detect abnormal vibrations or temperatures before a machine fails. Agriculture uses connected soil-moisture sensors and weather stations to optimize irrigation. Cities are deploying traffic, air-quality and smart-lighting sensors to reduce their energy footprint. And in healthcare, wearable devices enable continuous patient monitoring outside the hospital.
Architecture: The four layers that make IoT possible
Any IoT system, regardless of its application, is built around four layers. The perception layer consists of sensors and actuators that capture physical parameters — such as temperature, pressure, motion and location — and convert them into digital data. The connectivity layer is responsible for transmitting this information using short- or long-range communication protocols. The processing layer, distributed between the device itself and cloud servers, filters, aggregates and analyzes the data. Finally, the application layer translates this information into dashboards, alerts or automated actions that deliver tangible value to the business.
Figure 1. Source: Eurotronix
Choosing the right connectivity technology for the second layer is arguably the most critical design decision in any IoT project, as it determines power consumption, range, cost and the amount of data that can be transmitted.
Communication Protocols: There is no single solution
One of the key lessons from the IoT industry is that there is no universal protocol. Instead, there is a wide range of technologies, each suited to different use cases. For short-range communication within the same space, BLE (Bluetooth Low Energy) and Wi-Fi remain leading choices thanks to their low power consumption and sufficient bandwidth. For short-range asset identification and tracking, RFID remains an essential technology, while UWB (Ultra-Wideband) is gaining ground in applications that require highly precise positioning, such as tracking assets within an industrial facility.
When the requirement is to cover long distances while keeping power consumption to a minimum, LPWAN technologies come into play. CAT 1 bis and LTE-M operate over existing cellular infrastructure and provide operator-backed coverage, while LoRa makes it possible to deploy private networks without relying on third parties. This is particularly valuable in industrial or agricultural environments located far from urban coverage.
The biggest challenge ahead: Security
As the number of connected devices continues to grow, so does the attack surface. Many IoT projects are developed with functionality and cost as the main priorities, leaving security as an additional layer to be addressed later, when it should be built into the design from the outset. Key risks include unchanged default credentials, outdated firmware, unencrypted communications and poor management of cryptographic keys on resource-constrained devices.
In response, the industry is moving towards practices such as secure boot, digitally signed over-the-air (OTA) firmware updates, end-to-end encryption and mutual authentication between devices and platforms. Security is no longer an optional extra; it is a design requirement as important as power consumption or signal range.
From the lab to the factory: Real-world applications
IoT use cases are expanding across virtually every industry. In logistics, real-time tracking of goods using GPS and temperature sensors helps ensure the cold chain is maintained for pharmaceutical and food products. In smart buildings, the combination of occupancy sensors, connected HVAC systems and adaptive lighting can reduce energy consumption by up to 30%. In access control, RFID-based systems have replaced traditional cards with more flexible and auditable solutions. And in industrial maintenance, vibration sensors connected via LoRa or mesh networks can help predict failures before they lead to production downtime.
Conclusion: IoT as a competitive advantage
The Internet of Things has evolved from a technological trend into a key driver of competitiveness. Companies that can reliably and securely collect, transmit and analyze data from their surroundings can make better decisions, reduce operating costs and deliver new services to their customers. The challenge is no longer proving that IoT works, but rather choosing the right combination of sensors, communication protocols and platforms for each specific project.
Eurotronix: Your IoT technology partner
At Eurotronix, we support manufacturers and system integrators across every layer described in this article, offering a comprehensive portfolio of IoT modules and solutions from leading international manufacturers:
- Low-Power Cellular Connectivity (Cat 1 bis / LTE-M): ready-to-integrate modules that provide reliable coverage and connectivity for remote applications, from smart meters to asset tracking, with Fibocom and Cavli as leading manufacturers.
- Bluetooth Low Energy (BLE) and Wi-Fi: compact solutions for wearables, access control and indoor automation, with CE/RoHS certification, from Ai-Thinker and Ebyte.
- LoRa and LoRaWAN: modules from HopeRF, Ebyte and Ai-Thinker for deploying long-range private networks in industrial, agricultural or rural environments, without relying on third-party infrastructure.
- RFID: identification, tracking and access control, among other applications, with Elatec’s range of readers as a key component.
- Long-Range Mesh Networks: with NeoCortec and its NeoMesh technology, thousands of battery-powered sensors can operate without repeaters or additional infrastructure.
Our team of Field Application Engineers and Product Managers works closely with each customer to select the right module, address integration requirements and support the project from the prototype stage through to mass production.
Do you have an IoT project in mind? Contact our technical team and we’ll help you find the connectivity solution that best meets your needs.
Authors
Paula Ortega
Field Application Engineer IoT
Nacho Facerías
Product Manager IoT Communications
