A California man who travels a lot earned a Guinness World Record with his collection of 1,136 hotel keycards.

Morten Soerensen said his collection began when he started traveling for business in the ’90s and realized most hotels allowed him to keep his keycards as souvenirs.

His collection, stored in alphabetized albums, earned him the world record for the largest collection of keycards when GWR verified he has 1,136 from different hotels.