@Anonymous User
I think you've probably realised that unfortunately NOW TV don't provide bespoke big-button remotes, voice-recognition etc.
I've had similar issues with my mother who is partially sighted as a result of a stroke and struggles with TV remotes etc. In theory you could use a big-button universal remote if it is cable of learning IR transmissions from the host remote, but the NOW TV remote relies on the direction keys for a lot of navigating and the big button remotes tend not to have those keys, or not in suitable arrangements.
The Roku remote app on a tablet or phone (tablet makes the buttons even bigger) is a reasonable solution, although it comes with the added annoyance of having to unlock the device/wait for it to connect each time you want to do something. However if your friend has no suitable phone or tablet device then that doesn't help.
What does help my mum with locating buttons etc on appliances around the house, and might help your friend if it's primarily a sight issue rather than a dexterity issue, is to get some sheets of those little coloured sticky dots kids like to use (supermarkets, Smiths etc usually have them). You could stick these on the remote keys to improve the contrast and make them easier to see. Some white dots on the up, down, left and right keys with say an orange dot on the OK and a green dot on the NOW TV button (which is a useful way of opening the NOW TV app quickly) might help your friend locate and press the buttons easier than currently.
