I wonder if that shares the same physics as silvent’s compressed air guns.

Silvent’s air nozzles reduce the sound level when blowing with compressed air compared to blowing through open pipes. This is due in part to the reduction in noisy turbulence from using Silvent’s air nozzles, and also because of the nozzles’ special design. Silvent’s air nozzles pass the compressed air through small holes and slots, which raises the sound to frequencies beyond what the human ear can perceive. This allows us to make blowing with compressed air both quiet and efficient.

Could use an even quieter compressed air gun

https://www.newegg.com/p/N82E16826100006

Neural Impulse Actuator or brain-computer interface.

Just because you never heard of it doesn’t mean it hasn’t existed…

released in 2008

https://www.newegg.com/p/N82E16826100006

You don’t even need to be inserting probes to be able to do that…

OCZ had this ‘toy’ out in 2008.

https://www.newegg.com/p/N82E16826100006

one of the reviews…

Ultra-sensitive, excellent response time. Partial hands free gaming. Cool looking blue LED glow from interface box. This is the future of computer user interface. While designed primarily for FPS games, works exceptionally well with MMOs. Makes Crysis WARHEAD and FarCry 2 a joy to play. As a disabled person, this unit has allowed me to game with all the “normal” folks on the same level.

A couple old metrology equipment dated back from the 80s I still use calls them ‘mil’. It’s got dual dials for mil/mm. Gets me confused sometimes because the gauge can go down to couple millionths of an inch/couple 10s of nanometers.

LVDT for those curious.