SmartDOTS is a “anti-radiation” device that promised to neutralize the electric and magnetic fields transmitted by devices like phones and laptops. Researchers tested five of these stickers across a range of mobile phones and wi-fi access points. Despite the fact that there isnt any conclusive evidence linking exposure to EMFs to adverse health effects, conspiracies have linked them to everything from covid-19 to cancer. The Federal Trade Commission put out its own warning against these sorts of products about a decade ago, cautioning consumers that they were totally ineffective”]
Source: https://gizmodo.com/obviously-those-radiation-protection-stickers-dont-wor-1846033808