But this smartphone device, iSmartAlarm, turns an iPhone into a full-on security and monitoring system.

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In 2007, I contracted with ADT to install a home security system and monthly burglary and fire monitoring.

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The NYPD also maintains a "Ring of Steel, " a network of 4, 000 sophisticated security cameras that feed information into a central monitoring system to detect questionable or unlawful activity.

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