[cgreerrun]

I'm not aware of a consumer product. The authors of the paper started this company: https://www.infinite-cooling.com/. It looks like it's targeting industrial processes (cooling towers) where the collection efficiency is really high. Makes sense, why do B2C when you can do B2B w/ million dollar contracts...

I'm personally looking into making something that can continually top up something like a 500 gallon water tank every night (when humidity is high) on a residential property. These tanks are prevalent in the drought-stricken, coastal community I live in. You need about 2200 gallons/person/month, of which only 15 gallons/person/month is used for drinking water. So if you can continually collect water throughout the month and have the space for a tank (about the size of a truck bed) then it should be possible to supply most of your water usage off the grid and in a way that isn't draining reservoirs.