The Pensieve is one of the coolest devices in the Potter universe, which has been partially created in our digital world. The Pensieve is a memory storebox, accessible to anyone, with the ability to completely immerse a person as they experience those memories.
In a way, Facebook’s On This Day feature does that automatically, chronicling some of your memories which you can retrieve later. There’s also the practice of lifelogging, which you can narrow down to just photos and videos of your memories.
Of course, this is just a fraction of the Pensieve experience, since you can’t actually live out these digital memories, only look at them. But actually living someone else’s memories wouldn’t be possible, since technology only captures visual or auditory data, not thoughts, emotions, and the other things that make up our memories.