The poolside is noisy, water splashes everywhere, and the view is easily blocked. Even with lifeguards staying highly focused, relying solely on the naked eye makes it hard to spot every anomaly in time. Now, an assistive system composed of smart cameras and wearable wristbands is changing this passive situation.
When abnormal conditions such as suspected drowning, struggling, or prolonged immobility occur underwater, vision algorithms deployed around the pool quickly complete identification and positioning, and send precise coordinates directly to the wristbands of lifeguards in the corresponding zones. The wristband then vibrates and uses lights to indicate the direction. Lifeguards no longer need to look up at large screens or wait for walkie-talkie announcements. A quick glance at the wristband tells them which lane the incident is in, which handrail is nearby, and roughly how far away it is. From confirming the information to diving into the water often takes only a few seconds.
The value of this system lies in shortening the chain between "detection" and "arrival." In the past, frontline lifeguards primarily relied on experience, and duty officers in the monitoring room would relay anomalies through walkie-talkies, resulting in inevitable delays from information transfer. The vibrating wristband shifts lifeguards from "passively waiting for instructions" to "actively receiving locations," making their response path more direct. Especially when the pool is large and crowded, precise location alerts help lifeguards avoid blind spots and reach those in need of help at the first possible moment.
The technology itself is not complicated, but the support it provides at critical moments is very real. It cannot replace lifeguards' sense of responsibility and professional judgment, yet in scenarios where people are prone to fatigue and attention inevitably fluctuates, it adds an extra layer of round-the-clock protection. Each vibration of the wristband is a clear reminder: at that location, someone may need you. And when lifeguards rush to the scene at top speed and confirm that the person just swallowed some water or it was a false alarm, the system fulfills its most ordinary mission—making safety arrive one step faster.