Aziz and I have several clients who have already done this over the years. They are usually out of the area/country and are unable to make the extra trip to see homes. We will do a live video for them and give them our full feedback as we tour the home on their behalf.
With new technology becoming more readily available (video tours, 3-D tours (see www.matterport.com), this may become even more common in the future.
Article: Would You Buy This House Unseen?