[–] psychogenic 9y ago ↗ Not sure what I think of a tablet "coloring book" but the tech is intriguing...According tohttps://cococolor.com/pages/instruction#best-resultsit seems the apps just listen in on the mic and the stylus emits some sort of (ultra?) sound/sequence of audio pulses for each of the 4 buttons.Anyone know if that's correct? If so, I wonder what the frequency is... are all Android devices responsive to these sub/ultra sonics?
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[ 4.6 ms ] story [ 9.9 ms ] threadAccording to
https://cococolor.com/pages/instruction#best-results
it seems the apps just listen in on the mic and the stylus emits some sort of (ultra?) sound/sequence of audio pulses for each of the 4 buttons.
Anyone know if that's correct? If so, I wonder what the frequency is... are all Android devices responsive to these sub/ultra sonics?