The best alternatives to Kai are Hawkeye Access, The Tap, and LITHO. If these 3 options don't work for you, we've listed a few more alternatives below.
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Hawkeye Access lets you use eye and face movements to control your device hands-free. For people with motor impairments, this makes controlling an iOS device much easier.
LITHO is the input device for the real world. Combined with our Unity SDK, developers can build apps that bridge the physical and digital worlds unlocking a new category of precise and intuitive mixed-reality experiences.
HeadScroll is a product that helps musicians play instruments. It allows them to navigate their music sheets, chords, or tabs by simply tilting their head. The product is in beta, but we're looking forward to hear your early feedback! 😊
Svadilfari is a Safari extension that lets you control Safari with Gestures. By drawing gestures on websites, you can perform various actions in Safari, such as opening/closing tabs, copying URLs, and executing JavaScript.