As summer arrives, more and more people head to the water, and safety by the poolside always weighs on our minds. Many assume that installing smart cameras and equipping swimmers with anti-drowning wristbands means everything is under control. In reality, no matter how sensitive the technology, it can never replace a lifeguard's eyes and whistle. True safety comes from both doing their own jobs while covering for each other.
The value of a human lifeguard lies in experience and judgment. They can tell whether someone is tired or cramping, whether they have swallowed water or are just fooling around, and they can call out a warning to children chasing each other along the edge before things get out of hand. This sense of the scene and the ability to anticipate potential risks are things machines still struggle to achieve. Tech devices, on the other hand, excel at tirelessness. They can keep watching the water surface continuously, detect abnormal postures or swimmers who have not moved for a long time, and send alerts promptly, helping lifeguards notice blind spots or moments of distraction.
Good collaboration does not mean replacing humans with machines. Instead, it lets machines do a first pass, then sends key information to humans for decisions. For example, when a smart wristband detects an abnormal heart rate, or an underwater camera captures a motionless image, the system immediately pushes the alert to the lifeguard's terminal. At that moment, the lifeguard does not jump in blindly but quickly checks with a clear goal—whether it is a false alarm or a real emergency. If danger is confirmed, the efficiency and accuracy of human intervention are far higher than relying on either side alone.
In actual facilities, this collaboration also needs institutional support. Devices should not be installed just for show; they require regular maintenance and calibration. Lifeguards must become familiar with the devices' alert logic and avoid becoming numb from too many false alarms. Conversely, manufacturers should adjust algorithms based on lifeguard feedback to reduce unnecessary interruptions. The ideal state is: devices stand guard quietly, lifeguards patrol with ease, and when an alarm sounds, a human responds immediately. Technology makes lifeguards more composed, and lifeguards give technology a human touch. Together, they form the most reliable protection for every life.