Patent ID: 8659432

Claim:
A security system to detect a person falling overboard from a vessel comprising: a) a radio frequency identification tag worn by a person onboard a vessel, wherein said radio frequency identification tag contains a first information; b) a plurality of radio frequency identification readers, wherein each radio frequency identification reader includes a scanning area D, wherein said plurality of radio frequency identification readers are installed surrounding the hull of the vessel at a distance X from each other, wherein said distance X is less than the scanning area D, wherein said distance X permits at least a first radio frequency identification reader and a second radio frequency identification reader from the plurality of the radio frequency identification readers to detect said radio frequency identification tag in an event of said person falling overboard, wherein said first radio frequency identification reader detects said frequency identification tag passing through the first radio frequency identification reader scanning area D generating a first time and first location for said radio frequency identification tag and wherein said second radio frequency identification reader detects said radio frequency identification tag passing through the second radio frequency identification reader scanning area D generating a second time and second location for said radio frequency identification tag; c) a control unit on board the vessel, wherein said first radio frequency identification reader and said second radio frequency identification reader are operatively connected to said control unit, wherein said control unit recognizes individually each radio frequency identification reader; wherein the first radio frequency identification reader transmits to the control unit the first information received from the radio frequency identification tag, wherein the control unit further records the first time and first location; wherein the second radio frequency identification reader transmits to the control unit the first information received from the radio frequency identification tag, wherein the control unit further records the second time and second location, and the control unit triggers an alarm.