There are too many circuits on a Revolut card

I received my Revolut card and saw that in the invisible interior of it there are 2 circuits more than in a usual, contact(less/full) bank card.
If you look at the card in a powerful backside light, you can see 4 circuits :

  • the old, well-known chip (visible without the backside light);
    … and 3 normally-invisible ones:
  • the contactless, with its big, multi-coiled antenna ;
  • a square one, behind the two circles of the MasterCard logo;
  • a long rectangular one, behind the elongated rectangle where you sign.
    I have no idea what the last 2 are for.
    Should I worry and get paranoiac ?