Sounds like Newcastle are making sure tickets going to right people.
On a general note I think some of these big established clubs not finding it easy to go down to things we have put in place. Liverpool families etc have owned STs for years that they have always passed round. Outrage when Club tried to do something about this. Again outrage at West Ham when tried to go fully digital because many supporters own more then one ST and share them about. Dont know what situation is this season but last one the club backed down.
Liverpool did sort that in the end, but it took decades. There was an amnesty where the real current users got to retain the s/t’s.
But illicit s/t ticket sharing still goes on, as it does with other clubs such as us.