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Comment Re:Simple, (Score 1) 448

The problem is that their tech is in theory feasible (and used in some very low-energy swarm sensors), but that the numbers do not work out for their application at all. One problem is that bluetooth requires way too much power for this and a smartphone does not have a low-energy receiver. And doing anything audible with harvested energy? There are several orders of magnitude missing in what you can harvest and store.

Comment Nice, 1/2 mill for a few pieces of plastic (Score 2) 448

And no, they cannot do what they claim. It is possible to build locators like they describe, but they would need to be passive. There is just no way to harvest and store enough in something this small. RFID tags derive all their energy from the sender that queries them, and with good antennas you can go up to, say 30m with them. But that is the limit these days and it is for a passive device that has its energy specifically and targeted beamed to it by the sender. For a harvesting device, you get very low power radio, almost no computing power and a few meters in reach and that is with a specialized receiver, not a general-purpose cell-phone.

Comment Re:Is this one of those (Score 1) 183

Actually, this one has been cropping up every few years for a long time. It has never delivered anything so far and there is no reason to think that it will do so this time.

It is time to get real: What we have in computing power in a "normal" chip these days is pretty much what we are going to get for the foreseeable future. That is not a problem. Software these days is so bloated and slow that there is a lot of optimization potential. And even afterwards, what do you want? Most things will work fine with current computing power levels. Cars, trains and airplanes have stopped getting faster at some time, if the same happens to CPUs, so what?

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