One patent to rule them all. Universities from Wales, England, Scotland, Australia and the USA developing similar (Smart) Micro-needle patches for COVID-19 vaccine.

All following vaccines look like Bill Gates Patent number  WO2019/018301 Microneedle tattoo patches.

Wales-Scottish covid 19 smart vaccine patches: Swansea Uni smart vaccine

Quantum dot “tattoos” record patient vaccine history under their skin scannable with mobile or a scanner perfect for vaccine pass in the future: