yes exactly what Nisaba said, everyday there is lots of readings going on across AT in exchanges and circles and it works fine! I have never had a problem distant reading and I like to know as little about the person as possible to not influence my reading. The majority of my readings are with someone outside my country
Although perhaps I am missing out on the face to face contact like Celticnoodle suggested, I prefer writing out my readings anyway, it's almost like automatic writing for me when I do that, my fingers just flow.
Just watch them texting with the readings though, it's very easy for that to become silly questions like, "should I wear this today?" "what lunch should I eat?" questions to help you learn or for advice are great but don't let them take advantage with hundreds of questions which are not really worth reading for. A long time ago, a guy found out my mobile number and phoned daily if his girlf he split from would get back with him or not. I couldn't get rid of him, I now have boundaries about how I do readings. Almost in a formal way rather than just casual and the querent not taking it seriously. That's not to say tarot cannot be fun but I don't like approaching it frivolously.