Security… The PDM is walled off completely, it cant install apps, its not on wifi, you cant change any settings. The issue is that a PDM technically could easily kill you, by giving you a lethal dose of insulin.
Funny thing is that the newer Omnipod 5 from the same company works with regular phones now, but only in th US.
While not strictly PC, in euro footbal circles we split the three into Fat Ronaldo, Ronaldinho and Ronaldo (Christinao Ronaldo). Fat Ronaldo because he got fat when he retired, Ronaldinho because thats what his shirt said when he played for FC Barcelona, and just Ronaldo (Christiano Ronaldo), because he is the current one.