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Because the person I was replying to specifically asked if you could pair the two and power/update a stand alone display with just NFC delivered power? The dev
by rtkwe 3y ago
Because the person I was replying to specifically asked if you could pair the two and power/update a stand alone display with just NFC delivered power?
The devices for updatable price labels based on eInk already exists and I mention it in my post, it's powered by a low self discharge battery. Those IIRC use a special radio fob that connects to your phone instead of using NFC but you could probably do a largely drop in replacement for the radio circuit with NFC but that still doesn't solve the issue of updating the eInk screen. That's an order of magnitude more power required.
- anigbrowl 3y agoYEs, but their description of what they were imagining made clear they were using the word 'powered' to mean 'controlled by', not in the literal sense of delivering electrical power. I blame advertising for this, 'powered by [software product]' has become ubiquitous and exploits the relatively low literacy level of the public.
- rtkwe 3y agoI really think they actually meant literally powered by here. Being on HN I make the presumption that commenters are a bit more savvy than the average Joe Public. https://news.ycombinator.com/item?id=38002621 https://news.ycombinator.com/item?id=38002621
- anigbrowl 3y ago"Hang frame on the wall, choose the image in the app, bring phone close to frame, boom, the frame has new image." It's extremely obvious the person you replied to was talking about controlling the tablet, not supplying electricity to it. Their subsequent remarks are beside the point, this is what led to the confusion in this thread.
- rtkwe 3y agoBeside the point? It's pretty on point if you're trying to say they weren't talking about powering the device too... Also there are only two people here confused about GP's meaning. Can it be controlled by NFC is a trivial question.