You now need photo ID to travel on all Condor Ferries.
Passports, driving licences and national identity cards are acceptable for passengers travelling between Guernsey, Jersey, Poole and Portsmouth.
Children under the age of 16 don't need photo ID, as long as the accompanying adult can vouch for their identification.
Condor introduced the policy last month, but is enforcing it from today.
"The change is a desire to fall into line with international standards, as mandatory ID will become a regulatory requirement at the end of 2019"
More details can be found on the ferry operator's website.

Gas escape in St Helier 'minor' and 'posed no safety risk'
Four vehicle collision on the Espalande
Homes evacuated after gas smell reports
New sculpture trail teased
Jersey Police Chief appointed Chair of Opera House
Water usage rose to 23 million litres per day in Jersey heatwave
WATCH: 'Green oasis' unveiled at La Pouquelaye
Another spell of hot weather likely next week