The change comes as part of the UK flag state’s wider commitment to modernise its services to seafarers…
UK seafarers and seafarers working on UK-flagged vessels will benefit from new photocard-style certificates as the UK continues to drive forward maritime innovation. Starting this month, eligible seafarers will receive the new photocard certificates from the Maritime and Coastguard Agency (MCA).
In addition to the seafarer’s details and qualifications, the cards feature a QR code which links to the MCA certification database, allowing port officials and crew managers to immediately verify the credentials of the seafarer online.

https://www.superyachtnews.com/crew/mca-announces-new-style-certificates-for-uk-seafarers