<p>➀ As tempting as it might be, avoid using 0000 as your four-digit PIN code.</p><p>➁ According to a list compiled by security experts, 1010, 1111, 1122, and 1212 are among the top five worst PIN codes.</p><p>➂ The article discusses the risks of using common PIN codes and suggests changing them if they appear on the top 50 list.</p>