/s obviously. Although probably less ridiculous than other uses.
I do not expect people who believe this to react well if they literally have to get a microchip implant to be allowed to go into stores or to work. These sorts of beliefs are more common than you might expect in large parts of the country.
http://news.mit.edu/2019/storing-vaccine-history-skin-1218
The whole thing sounds absurd and a huge privacy violation, honestly. Their reasoning is that "..there is little infrastructure for storing medical records, so there’s often no easy way to determine who needs a particular vaccine."
So rather than invest in the ancient technology called paper and file cabinets, they need to embed a high-tech tattoo? Mobile phones are pretty ubiquitous in Africa; why not build a vaccine record system based on that instead?
As long as the marker has zero PII, just what vaccine was given, this seems harmless enough and vastly more helpful than the current paper system.
The potential for abuse is limited because you need to have the person in front of you, and then the only info is a vector of vaccine administered bits.