Apps DB trials travel without ticket checks By BMaaS Contributor Posted on August 3, 2017 1 min read View original post.GERMAN Rail (DB) has begun testing a new app-based fare verification system which eliminates the need for onboard ticket checks. The so-called Comfort Check-in allows passengers with a seat reservation to check in after boarding using the DB Navigator smartphone app. This information is then displayed on the conductor’s handheld device. DB says this makes travel more relaxing for the passenger and gives onboard staff more time to respond to the needs of individual travellers. Comfort Check-in is currently being trialled on two ICE services between Stuttgart and Dortmund, and is due to be rolled out on five other services in the near future. If the trial is successful DB plans to introduce Comfort Check-in on other long-distance services in the coming year.