On Jun 17, 11:37 am, XmaX wrote:
Hi, I often travel from Z2 to Z4 via Z1. Can I buy a Z234 travelcard,
or do I need a Z1234? I assume that it might be fare evasion if I use
it, but will it let me through the gates?

A paper Travelcard will, but an Oyster card will count the journey as
via Z1 and charge you an excess (usually - if there's a sensible route
not via Z1 it may assume you've gone that way).

U