Although the US Game Stop once accidentally made a public advertisement for the R4 card, the use of R4 cards is still prohibited by law in foreign countries with strong awareness of copyright protection, and the risk is also very high. Recently, a report from the Norwegian gaming website Konsollguiden.no claimed that several European factories specialized in producing R4 cards have successively ceased production. Although the specific reasons were not explained, the website revealed that this result was due to pressure from European copyright protection organizations and related institutions on the local government.