Still reeling from the aftershocks of Sept. 11, 2001, more than seven in 10 Americans surveyed feel reassured by cameras and other security measures installed where they work, shop and play, according to a new survey from ADT Security Services Inc., Boca Raton, Fla., conducted with Security magazine.

Conducted weeks after 9/11’s third anniversary, the ADT Security Survey also found that six in 10 Americans said that security cameras provide effective crime deterrence.

The ADT Security Survey of 1,030 adults across the country was conducted during October by BNP Media in conjunction with TNS NFO. The survey has an error margin of plus or minus 3.1 percent.