Channel 4 will shortly introduce mandatory sign-in to access content through All4 on Freeview Play. A prompt to sign-in will appear when accessing a programme either through the All4 player directly or via the scroll-back TV guide. Simply enter your registered email address and password to continue. This should only be required once unless you choose to sign out.
If you have not yet registered with All4, you can create an account at www.all4.com/freeview.