Subdermal implant. Either to release chemicals or to emit some sort of radiated signal to her brain, which is why it’s in her face - ultra low power.
Any way you look at it, it’s creepy stuff.
Wouldn’t it make more sense to put something like that within the hairline somewhere?
However they can't have her off the trail three days for each day of campaigning. They had to come up with something that would allow her to give at least one speech a day.
I'm sure the hope is that everyone will forget about the long stretch in the summer and fall when she had few if any public appearances.
If people only remember the last couple of weeks, then when the MSM tries to give her the coronation she expects it won't look quite as deceitful as it is.