In the Age of Ultron, several Avengers try to lift Thor's hammer, but are not able to lift it. Tony Stark suggested it was imprinted with Thor's fingerprints. However, the Vision is able to lift Thor's hammer.
In an earlier Thor movie, Odin banished Thor and his hammer to Earth, and stated that anyone worthy of wielding the hammer would be able to wield it. Thor was at first not able to wield the hammer anymore, but then proved his worthiness and was again able to wield the hammer.
In the Age of Ultron, Thor went to the water of sight with Erik Selvig and was able to get deeper into his vision of the four infinity stones which had surfaced in recent years, and Thor immediately returned to Stark tower and sent lightning through his hammer into the cradle, and The Vision emerged. The Vision was then able to wield Thor's hammer.
So we assume that the imprinting is some sort of mental telepathy thing. Odin and Thor are strong enough that they are able to channel their powers through the hammer enough to enable a strong enough entity to wield it. ... But we are told elsewhere that Asgard is not magical. That it only seems like magic to us because their technology is so much more superior than ours. So what is the technology behind the ability to wield Thor's hammer?
Captain America and Tony Stark may not have the vantage point to see it in Age of Ultron, but as consumers of the MCU, are there other plot elements elsewhere in movies or comic books which explain how Odin and Thor are able to channel control of the hammer?