The Indira Gandhi International Airport has created history of sorts by being the world's first airport (take my word for it) to have not one but TWO ceiling-mounted, backlit, PERMANENT yellow plastic signs reading LIFT OUT OF ORDER.

Sign at Gate 3, Indira Gandhi International Airport, Delhi, in April, 2000

In case of any complaint against security staff or in case security staff asks you to buy anything from duty free shop, please contact 

(i) Inspector, Control Room, 

(ii) ACP/Incharge shift.

A sign, roughly 3 feet by 4 feet sign, at IGIA outside the Gate 3 enclosure faces the passengers (not the security staff) and proclaims (roughly) [April, 2000]

DOs AND DON’TS FOR SECURITY STAFF.... Be courteous... Do not ask person to turn around while frisking... If boarding pass should fall down, don’t ask passenger to pick it up, pick it up yourself...

I'd make a movie on Indian airports if "videography" was permitted inside. At Bombay airport, there is this one escalator with a painted sign of "Instructions for use" that include "FACE IN THE DIRECTION OF TRAVEL" along with about 8 others. Indeed. Of course just below the sign was another old handwritten sign saying "OUT OF ORDER".

All the chairs in the gate area had their cushions BOLTED on to the plastic. The bolts protruded out a cm or two from the back of the chairs. Reminded me of the Delhi airport where the wall next to the disembarkation staircase is of black marble (or that's what it looks like) with each slab of stone held in place by four bolts.

Following the hijacking of the IA flight from Kathmandu, security has been beefed up at all airports. This implies

1. Allowing on only one piece of cabin baggage per passenger - a logical decision since the hijackers had several carry-on baggages filled with weapons.
2. At some airports they are rationing out hand baggage tags - they glance at your carry-ons before giving you the tags. At some others, these tags lie all over the place. Of course the same tags are used everywhere.
3. At Bombay, and Bombay alone, they don't let you board until you have filled out your name and flight number on the hand baggage tags. Presumably this helps security.