A holographic keyboard
A keyboard with a virtual, projectable input interface.
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Current holographic keyboards can be a good option if you want a portable keyboard for your mobile device. However, they won’t be much help for serious typing tasks.
This is so cool!
A holographic keyboard
(5 upvotes)Screen and keyboard projector set – type and view your computer screen anywhere
(4 upvotes)You can buy this laser projection keyboard.