score:6
Airport entry checks are in my experience near-universal in Indian airports. Back in the 2000s, they used to insist on a hard copy printout of your flight itinerary, so I've made it a habit to always bring one along, but I gather showing a ticket on your phone is fine these days.
As far as I can tell, all they do is check that you have ID (for foreign nationals, this has to be a passport, even for domestic flights) and that you have something vaguely ticket-like with today's date and a name that matches your ID. The validity of the ticket/PNR is not checked, and you are not required to present a boarding pass, since this check is before checking in.