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What's wrong with the IR implementation? I guess they could introduce capacitive sensors as well, but I'd imagine IR + capacitive sensing would only make it mor
by runawaybottle 13y ago
What's wrong with the IR implementation? I guess they could introduce capacitive sensors as well, but I'd imagine IR + capacitive sensing would only make it more accurate.
IR makes sense mainly because there has to be a simple way to know that you're trying to type and not trying to move around the mouse/gesturing. Soon as your fingers are a certain height off the keyboard, it can know you're not typing. Otherwise you'd probably want to hold down SHIFT or something to indicate you want to use the mouse/gesture.
- bertil 13y ago> What's wrong with the IR implementation? Not sure how that would work in practice, but I personally work with a cup of tea between my hands most of the time. That could interfere. Leap Motion was popular some time ago, and it detected the cup as such, not something bigger. I don’t know if they used IR though. As you said, when interpreting non-obvious outputs of probes, several detection elements presumably help interpret issues: say pressure, conductivity for trackpads. I believe ‘Moves’ (the app recently bought by Facebook) use both the phone cell-tower signal to triangulate location and the motion to correct the occasional jump to the next neighbourhood when the nearest tower is suddenly busy. For that ‘virtual trackpad’, using several frequencies or motion sensors might help; I’m not a big fan of your suggestion of a button: it seems… cumbersome, but it might actually work. I was made to realise today how I unconsciously used three- to four-button keystrokes most of the time.