As I understand it (could be wrong!), these biometric scanners are for the “non-EU” passport lanes.
GV card holders (i.e. those without PT passports) don’t get to use the EU lanes? Someday I hope to find out for myself!
Italy and Lisbon already allow some non-EU countries to use their e-gates… I don’t know how that factors into all this, but see below:
Under the new EES system, EU member states will require non-EU visitors, business or leisure, to provide biometric data including fingerprints and facial images when entering the Schengen area.