Posts on social media have been advocating for registering with a website that purports to be collecting data on unvaccinated people to serve a control group for vaccine studies. Those joining the site and submitting data are promised an ID card that displays their status as unvaccinated and are encouraged to buy merchandise and make donations to the site. However, no health body recognises this website as part of any actual clinical trials, which are done at specific times under specific circumstances. Data crowdsourced from the public would not be suitable for randomised control groups in clinical trials. Reuters has fact-checked the claims made by proponents of this website.