Alternatives
Products that do what Mitigating the spread of respiratory infections in indoor spaces does
Hello HN, Almost 15 years into being a (rather quiet) user of HN, I am thrilled to write my first Show HN post! Early in the pandemic, we looked to devise a system that would drastically reduce the risk of spreading Covid-19 when people gathered in a room. The system would need to disinfect the air rapidly to keep the concentration of virions in the space low enough so the risk of cross infection would be drastically cut [1]. It became clear that an effective system would need to draw air away from the breathing space so that the exhaled air from an infected individual would not impinge upon…
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Hello everyone, My son loves Hacker News, so I am using his account. I love innovation and technology. With the restrictions due to Coronavirus from practicing in my clinic. I created a system that replaces the air in my office in 20 seconds. Those vacuums are also filled with UV-rods inside to kill any viruses. The air is release below the office in a 2-3 foot basement, which is also filled with UV rods. https://youtu.be/UfYt1w156QA https://youtu.be/UpO8WXOlgcQ (side-by-side) Given how much my son enjoys Hacker News I thought you would all enjoy it. Here are…
2020
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Hey HN! Some more info: I’m an NHS doctor and the founder of Pi-A (https://www.pi-a.io) which developed Lungy (https://www.lungy.app). Lungy is an app (iOS only for now) that responds to breathing in real-time and was designed to make breathing exercises more engaging and beneficial to do. It hopefully has many aspects of interest to the HN community – real-time fluid, cloth and soft body sims running on the phone’s GPU. My background is as a junior surgical trainee and I started building Lungy in 2020 during the first COVID lockdown in London. During COVID, there were…
2023 · lungy.app
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In the cold season we tend to keep the windows closed. The air gets "stale": humidity often rises above 60 %, which can harm our wellbeing and promote mould. At the same time the CO₂ level in the air increases, which impacts our ability to concentrate. So I built a room air monitor that stays unobtrusive as long as everything is in the green zone, but becomes deliberately noticeable once thresholds are exceeded. For my personal love of statistics I also visualise the measurements in a clear dashboard.
Nov 2025 · nicolin-dora.ch
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2020 · findcovidtesting.com
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2020 · justwearit.fyi
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2020 · gabrielsroka.github.io
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Companies offering free or discounted tools during COVID-19
2020
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