Legal analysis: If you forget to bring your ID card after vaccination in COVID-19, you can find your electronic ID in Alipay and show it to the relevant staff, but this method is not available in some areas, so you need to consult the relevant local staff.

Legal basis: People's Republic of China (PRC) Identity Card Law.

Article 2 China citizens who have reached the age of 16 and live in People's Republic of China (PRC) shall apply for resident identity cards in accordance with the provisions of this Law; China citizens under the age of 16 may apply for resident identity cards in accordance with the provisions of this Law.

Article 3 The contents of the resident identity card registration include: name, gender, nationality, date of birth, permanent residence, citizenship number, personal photo, fingerprint information, validity period of the certificate and issuing authority.

Citizenship number is a unique and life-long identity code for every citizen, which is compiled by public security organs according to the national standard of citizenship number.