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Smoothness. A typical user won't be able to perfectly steady his or her hands when pointing with a laser-pointer or with a phone. This may cause the Cursor/RedDot to be a little 'jittery', as its response to changes in the iPhone's orientation is quite sensitive. For this reason, Upoint offers the option to average these orientation measurements, resulting in Cursor/RedDot behaviour that's smoother - at the trade-off of being somewhat 'lagged'.

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