I assume it would be permissable.
I once read a blog post by Fr. Z where he said that he used his laptop when the Altar Missal “disappeared” from his chapel. I think this is when he was talking about an electronic Missal, which got me thinking about electronic Altar cards and screens built into the Altar… hmmm
Not a shabby idea! New translations could be easily uploaded from the Vatican’s database. No more waiting for the translations to circulate. Well, I dunno, that kinda sounds Orwellian to me, but still neat lol.
But, I can easily see the benefits of something like that. I do have the entire 1962 missal on my PDA, in addition to the divine office (so much easier!), a DRB, latin vulgate, documents of VII and Trent, four catechisms, Rituale Romanun, Code of Canon Law, the summa, and a small library of Catholic works.
Oh yeah, and a few games hehe
Books have a long way to go before they’re obsolete, though. Even though I have it on my PDA, I still take my good ol’ Baronius missal to Church
The only thing about using a hand missal, to me, is that it would be hard to read standing with it sitting on the altar.