To describe a citizen from a city who must(or tends to) rely on mobiles, Internet, emails etc. to survive their lives.
Scenario: Digitizen Joon went to visit digitizen Ram over at his place.
Joon: I don't seem to be getting any reception on my pre-paid mobile. I need to send out an email now so could I use your Internet for a sec?
Ram: Sorry, just got disconnected last night coz I forgot to pay the bill.
Joon: Dude! How can you live without it? Pay it now!
Ram: But I can't seem to be able to pay it online...