Well, y'know, I started writing this in a state of fury. Y'see, I thought I'd better read the 1969 decree Memoriale Domini of the Liturgy dicastery, all about the methods of receiving Holy Communion. But ... could I find the actual text anywhere on the internet? Answer: No! So in the end ... I hate doing this because it always seems to end up with lots of tedious scrolling up and down ... I turned to Acta Apostolicae Sedis 1969 pp 541sqq, and read quickly through it (it's not very long) right down to the last line. That last line consists of the great name, the name above (or rather, below) all other names ... that of the Worshipful Grand Master of Liturgy himself, H Bugnini. (Even in this blog, I bet there are readers so ignorant that they weren't aware that 'Annibale' starts with an H. Now you know.)
Of course, for those of you, megatraddies, who refuse any and every piece of liturgical legislation later than the Council of Laodicea oops I meant Vatican II, Memoriale Domini is out-of-court. 1969 is well after the Council; well after the cut-off point of 1962 as appointed by Benedict XVI in Summorum Pontificum. So you will not be AT ALL interested in the facts that (1) it orders Communion in the mouth to be retained (servari debet, non solum quia in tradito plurium saeculorum more innotitur, sed praesertim quia Christifidelium reverentiam erga Eucharistiam significat); (2) it leaves the door a few millimetres ajar for exceptions to be made; and (3) it preserves the right of faithful Christians to receive in the mouth even where permission has been given for optional reception in the hand. For you hardline Extraordinary Form traditionalists, none of this has any relevance at all. That is why I have not just explained it with such care.
But for keen post-Concilar types, Bugniniphiles; Tablet readers; many Bishops; the clear directive here is that a layperson who wishes to reive in os must be allowed to do so. And these safeguards have been iterated since 1969. Bugnini locutus est, causa finita est, as S Augustine put it after he sacked his girl-friend. Obedience is important! Bow, bow, before his daughter-in-law elect!!
I shall delete unread any comments offered before I have completed this post in a day or two.