4 links have been added on this idea.
  1. These pool alarms can alert you if there is an unsupervised child or a pet in the swimming pool.
    https://www.countynewscenter.com/county-fire-gives-pool-alarms-to-protect-families/

  2. Check out this swim club that uses anti-drowning headbands to keep kids safe when swimming.
    https://www.tauntongazette.com/story/news/local/2022/09/15/taunton-boys-girls-club-metro-south-wave-headbands-prevent-drowning-detection/10360441002/

  3. This safety bracelet can alert you if your kid is drowning or in danger.
    https://www.yankodesign.com/2022/04/22/soswim-safety-bracelet-for-the-kids-alert-you-of-danger-and-drowning/