I would do it by using genetically modified human cells like macrophages, which sit inside blood vessels and register electric activities of the surrounding. It may send information by dumping its log as a DNA chain back into bloodstream. Downstreams such DNA chains will be sorted and read, but it would create time delays.
This way of converting cells into DNA machines will lead eventually to bionanorobots, which will be able to everything original nanobots were intended to do, including neural dust.
Another option is to deliver genetic vectors with genes into some astrocytes, and create inside them some small transmission element, like fluorescent protein reacting on changes of surrounding electric field.
The best solution would be receptor binding drug, like antidepressant (which is legal to deliver into the brain), which also able to transmit information about where and how it has bounded, maybe helping high resolution non-invasive scans.
I would do it by using genetically modified human cells like macrophages, which sit inside blood vessels and register electric activities of the surrounding. It may send information by dumping its log as a DNA chain back into bloodstream. Downstreams such DNA chains will be sorted and read, but it would create time delays.
This way of converting cells into DNA machines will lead eventually to bionanorobots, which will be able to everything original nanobots were intended to do, including neural dust.
Another option is to deliver genetic vectors with genes into some astrocytes, and create inside them some small transmission element, like fluorescent protein reacting on changes of surrounding electric field.
The best solution would be receptor binding drug, like antidepressant (which is legal to deliver into the brain), which also able to transmit information about where and how it has bounded, maybe helping high resolution non-invasive scans.