We just released version 1.5.1 of Ari! There are significant sign accuracy improvements (especially open hand detection and sign tracking), bug fixes, and the new AriProfile API that allows you to adjust performance parameters. Indie Developer and Enterprise license tiers also gain access to the beta HandSignDeltaEvent API, which tracks changes in HandSignEvents and maps them to a changing scale value (zooming, sliders, etc.).
Ari v1.5.1: new APIs, improved sign detection
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