The Internet of Things: How IoT Works, Wireless Frequencies, and the Technology That Can Guide Animals
From smart homes to electronically guided insects, the Internet of Things is changing how technology interacts with the physical world. Imagine a world where your refrigerator monitors its contents, your vehicle communicates with traffic systems, and a farmer can track hundreds of cattle without physically inspecting every animal.
Now imagine something even more surprising: scientists developing miniature electronic devices that can influence the movements of living insects. These technologies may sound like science fiction, but they demonstrate how the Internet of Things (IoT) is expanding beyond ordinary household electronics.
How does this technology work? What electromagnetic frequencies does it use? Can those frequencies affect living tissue? And how can connected devices influence animal behavior?
Let's explore the science.
What Is the Internet of Things?
The Internet of Things refers to physical objects equipped with sensors, processors, software, and communication systems that allow them to collect and exchange information.
Common examples include:
Smart thermostats and security cameras
Fitness trackers and smartwatches
Connected vehicles and traffic sensors
Medical monitoring equipment
Agricultural sensors and livestock tracking devices
Industrial machinery and automated factories
A typical IoT device collects information through sensors, processes that information, and communicates with another device or computer system. For example, a smart thermostat measures room temperature and automatically adjusts heating or cooling. But IoT becomes considerably more interesting when these systems interact with living organisms.
How Do IoT Devices Communicate?
Many IoT devices transmit information through electromagnetic waves, particularly radio waves and microwaves. These signals carry digital information between devices using technologies such as Wi-Fi, Bluetooth, Zigbee, cellular networks, and LoRa.
Different technologies operate at different frequencies.
Technology | Typical frequency | Approximate wavelength |
Bluetooth | 2.4 GHz | 12.5 cm |
Zigbee | 2.4 GHz | 12.5 cm |
Wi-Fi | 2.4 GHz | 12.5 cm |
Wi-Fi | 5 GHz | 6 cm |
Wi-Fi | 6 GHz | 5 cm |
LoRa | 915 MHz | 32.8 cm |
Actual operating bands vary by device and country.
Frequency measures how many times an electromagnetic wave oscillates each second.
Wavelength measures the distance between successive points in the wave's repeating pattern.
Higher frequencies have shorter wavelengths.
These characteristics influence how signals propagate through buildings, vegetation, and other environments. However, frequency alone does not determine whether a wireless signal is biologically harmful.
Can IoT Radio Waves Affect Living Tissue?
Human and animal bodies contain water, salts, and other substances that interact with electromagnetic fields. When radio-frequency energy enters living tissue, some energy may be absorbed. The most firmly established biological effect of sufficiently intense radio-frequency exposure is tissue heating.
At high enough exposure levels, heating can cause injury.
However, ordinary wireless communication equipment generally operates at much lower exposure levels, and scientific assessments have not established harmful effects from radio-frequency exposure below recommended international limits.
Radio-frequency signals are also classified as non-ionizing radiation, meaning their individual photons lack the energy needed to directly ionize atoms.
Importantly, biological effects depend on several factors:
Frequency and wavelength
Power and exposure intensity
Distance from the transmitting device
Duration of exposure
The amount of energy absorbed by tissue
A Bluetooth sensor and a powerful industrial microwave system may use similar frequency ranges but produce dramatically different exposure conditions.
A signal's frequency alone cannot establish whether it is dangerous.
How IoT Is Transforming Livestock Farming
One of the most interesting applications of IoT is precision livestock farming.
Farmers can attach electronic collars, ear tags, or other sensors to cattle to monitor their location, movement, and health-related activity.
Depending on the system, these devices can track:
GPS location
Movement and activity patterns
Grazing and rumination behavior
Temperature and other health indicators
Changes that may suggest illness or reproductive activity
The information is transmitted to farm-management software, where farmers can monitor their animals remotely. Instead of searching a large pasture for a missing animal, a farmer may be able to locate it using a smartphone. Some systems can also identify unusual activity and alert farmers when an animal may require attention. But monitoring is only the beginning.
Virtual Fencing: Can Technology Guide Cattle?
Yes. Modern livestock technology includes a system called virtual fencing.
Instead of installing physical fences throughout a pasture, farmers create digital boundaries using GPS coordinates.
A cow wears a collar that recognizes its position relative to these boundaries.
When the animal approaches a restricted area, the collar emits an audible warning.
If the animal continues forward, certain systems deliver a brief electrical stimulus.
Through training, cattle can learn to associate the sound with the boundary and change direction before receiving further stimulation.
This allows farmers to influence grazing patterns and manage pasture access without constructing new fences everywhere. However, virtual fencing is not equivalent to controlling an animal's thoughts. The animal responds to sensory cues and learned associations. The technology also raises animal-welfare questions, particularly regarding electrical stimulation, stress, training, and the reliability of the equipment.
Scientists Are Developing Electronically Guided Insects
Perhaps one of the most extraordinary developments involves experimental cyborg insects.
Researchers have equipped living insects, including cockroaches, with miniature electronic devices capable of receiving wireless instructions.
These systems may contain:
Wireless receivers
Small batteries
Microcontrollers
Motion and environmental sensors
Electrodes that stimulate specific sensory structures
When a wireless instruction reaches the device, its electronics can deliver localized electrical stimulation that influences the insect's movement. For example, stimulation of certain sensory structures can encourage a cockroach to turn or begin walking.
A 2024 research study demonstrated a cyborg cockroach system capable of navigating around obstacles and detecting potential human presence using miniature onboard sensors.
This technology is being investigated for applications such as search-and-rescue operations, environmental monitoring, and navigating spaces that conventional robots cannot easily access.
These experiments do not demonstrate that ordinary wireless networks can control unmodified insects remotely.
The influence comes from specialized electronics physically attached to or implanted in the insect—not from ordinary radio signals directly controlling its brain.
What's the Difference Between Monitoring and Controlling?
Understanding this distinction is essential. Monitoring means collecting information about an organism. A GPS collar recording a cow's location is an example. Behavioral guidance means delivering cues that encourage an animal to respond in a particular way.
Virtual fencing uses this approach.
Direct electrical stimulation involves applying electrical signals to specific biological structures to influence movement or another physiological response. Experimental cyborg insects demonstrate this third approach. Although all three systems may use wireless communications, their biological mechanisms are fundamentally different.
What Are the Ethical and Security Concerns?
As IoT systems become more sophisticated, important questions emerge.
Who controls the information collected by connected devices?
Could compromised equipment interfere with agricultural operations?
How should researchers evaluate the welfare of animals used in electronic stimulation experiments?
And what safety standards should apply to devices that interact directly with biological tissue?
These questions deserve careful scientific and public discussion. Connected technology can provide significant benefits, but security, transparency, and responsible design remain essential.
The Future of IoT and Biological Technology
The Internet of Things is gradually connecting more of the physical world.
Smart agriculture can help farmers manage resources, while medical sensors can assist with monitoring patients. Experimental biohybrid systems demonstrate another direction: combining living organisms with electronics to perform specialized tasks.
Future developments may include smaller sensors, improved batteries, more efficient wireless communication, and increasingly sophisticated automation. However, it is important to distinguish proven capabilities from speculative possibilities. The ability to transmit wireless information does not automatically imply the ability to manipulate living organisms.
Final Thoughts
The Internet of Things is much more than smart appliances and connected smartphones.
It is a technology ecosystem that allows physical devices to observe their environments, exchange information, and sometimes initiate physical actions.
In agriculture, IoT sensors can monitor livestock and help farmers manage grazing through virtual fencing.
In laboratories, scientists are experimenting with miniature electronics that can influence insect movement.
And across these applications, electromagnetic waves provide a means of communication.
Understanding the difference between wireless transmission, energy absorption, behavioral guidance, and direct biological stimulation is essential to understanding what IoT technology can—and cannot—do.
As our world becomes increasingly connected, these distinctions will only become more important...
Comments