this post was submitted on 24 Feb 2025
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People have been able to extend the electromagnetic effect to a few feet, but yeah, there's a reason why most just use the close range version we have today.
Here's a demo from 2009: https://youtu.be/MgBYQh4zC2Y
Microwave transmission has also been explored in addition to lasers, as you say, but either way both methods involve power loss in energy conversion, and they both are very directional, making it impractical for consumer use.
But anyway, just wanted to say that the tech technically exists since it's funny when normal people bring it up without knowing the limitations of current technology and physics.