In some cultures, prayers are held to have an intrinsic meaning.
It is not the telling, or reciting of the prayer, the prayer exists on it's own, separate from the prayer (prayer, the recitation or written expression thereof, exists separately from the one who tells it...).
And this existence, the intrinsic existence of the prayer, influences the universe for the better, it can be replicated, multiplied and even mechanized.
The most notable examples are the Tibetans, with their branch of Buddhism that allows for prayer flags (prayers are carried from the flags by the winds), prayer wheels (spinning the wheel releases the prayer contained on both the outside and wound round the shaft of the wheel), there are other examples as well.
In Catholicism the saying of the rosaries would be equivalent, but only very roughly, for the church has not given sanction to machines to say rosaries, they must be said by the faithful, and the repetition of them, while apparently mechanical, is also contemplative and meditative. Whereas the blowing of flags by the wind, or spinning of unseen wheels by machines or people could not be said to be either.
I find this curious.