Transport for London (TfL) reopens applications for some Oyster photocards after a cyber-attack in September.Students, apprentices, and care leavers over 18 can now apply for discount cards, while other groups will have to wait for phased reintroduction.TfL restored data feeds linking Tube service information to third-party apps, but full online services are still being restored.The hack delayed the rollout of contactless payments at national rail stations around London.