Researchers have discovered they can control a persons mind using optogenetics (blue light). This allows for a traceless non-invasive way for mind manipulation and control.
Optogenetics: Using Light to Control Your Brain
https://youtu.be/D_9rdj4SJrc?si=Jru1Mms-fVBZ0dHe
Wikipedia: Optogenetics
https://en.wikipedia.org/wiki/Optogenetics
Wikipedia: Optogenetic methods to record celluar activity
https://en.wikipedia.org/wiki/Optogenetic_methods_to_record_cellular_activity
Mind-controlled transgene expression by a wireless-powered optogenetic designer cell implant
https://www.nature.com/articles/ncomms6392
Noninvasive brain control
New light-sensitive protein enables simpler, more powerful optogenetics.
https://news.mit.edu/2014/noninvasive-brain-control-0629
Electromagnetogenetics for remote mind control
https://www.science.org/doi/10.1126/scisignal.aaf7987
Researchers Achieve Mind Control Using Only Light
https://thedebrief.org/researchers-achieve-mind-control-using-only-light/
Mind-Controlled Device Switches On Gene Expression
https://www.genengnews.com/news/mind-controlled-device-switches-on-gene-expression/
The effects of red and blue light on alertness and mood at night
Mind Control Through Light: The Emerging World of Optogenetics
20 billion nanoparticles talk to the brain using electricity
Optogenetics: Control of Brain Using Light
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5712383/
Scientists manipulate brain cells using a smartphone
https://newsroom.uw.edu/news-releases/scientists-manipulate-brain-cells-using-smartphone