wireless HDMI, useful for off-camera monitoring?

This wireless HDMI gadget looks interesting, or at least promising, especially for DSLR work. Could turn a tablet that can take HDMI input (or a cheap small HDTV) into a usable off-camera monitor maybe. Or am I reading this wrong?
 
wireless hd (and specifically HDMI) already exists since several years.
this technology is just emerging to consumer market, but still expensive (minimum 200$)..

what you are talking is about integrating it into device.
By experience, this should not happens.
Sending waves over air is difficult , not only technically, but it requires a lot of prerequisites (like getting extra power, antennas, free frequencies(worldwide), FCC approval , shared protocols).
look at blue tooth that never really take off (we were promising that all devices will be talking each other with bluetooth).
Look at even a simple mp3 player, most of them never include an FM transmitter.
Look at camera, it is hard to find one able to send video wireless.

today, most content send wireless is sent thru digital (wifi, bluetooth) and both offers enough capability to absorb almost any
needs.
 
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