Wouldn’t a tattoo on the forehead be more appropriate?
Yeah, you’re probably right. It’s important that we know who got vaccinated (or has antibodies from natural infection) and who didn’t/doesn”t so we know who needs to wear a mask and who doesn’t so a forehead tattoo might be the easiest way of accomplishing that. But maybe we could also have a small chip in the wrist or the back of the hand that we could scan and immediately know which vaccine you had-in case we later come to find out that some vaccines are less effective than others. Good ideas Laslo.