System and method for real time theft detection

A system for tracking one or more portable devices in real time to detect theft of the one or more portable devices, the system comprising:

• one or more portable devices without processing capability, each comprising an RFID tag;
• one or more portable devices with processing capability, each comprising a Radio frequency Identification (RFID) reader configured to interrogate an RFID tag during successive sweep intervals, wherein the sweep interval represents active state of the RFID reader;
• a wearable-band adapted to be worn by a user, wherein the wearable band includes either one of the portable devices without processing capability, or one of the portable devices with processing capability;
• wherein the one or more portable devices with processing capability are configured to:
• receive one or more pairing information from an RFID tag, wherein receiving the one of more pairing information from the RFID tag comprises:
• receiving a unique identifier corresponding to vendor specific information associated with the RFID reader and the RFID tag;
• and
• receiving a unique number allocated to each pair of the RFID reader and the RFID tag;
• compare the received one or more pairing information with corresponding one or more pairing information stored in the RFID reader;
• and
• generate an alert signal via the wearable-band or the one or more portable devices when the received one or more pairing information does not match with the corresponding one or more pairing information stored in the RFID reader.

A method for tracking one or more portable devices in real time to detect theft of the one or more portable devices, the method comprising the steps of:

• interrogating a Radio Frequency Identification (RFID) tag via a RFID reader during successive sweep intervals, wherein the sweep interval represents active state of the RFID reader, and the RFID tag and the RFID reader reside in a wearable band adapted to be worn by a user and in the one or more portable devices respectively or vice versa;
• receiving one or more pairing information from the RFID tag;
• comparing the received one or more pairing information with corresponding one or more pairing information stored in the RFID reader;
• and
• generating an alert signal via the wearable band or the one or more portable devices when the received one or more pairing information does not match with the corresponding one or more pairing information stored in the RFID reader, wherein generating an alert signal via the wearable band or the one or more portable devices comprises:
• measuring a first time value at the start of the sweep interval;
• measuring a second time value when the received one or more pairing information does not match with the one or more pairing information stored in the RFID reader;
• calculating a difference between the second time value and the first time value to obtain a third time value;
• comparing the third time value with a pre-determined false alarm threshold value;
• and
• generating an alert signal when the third time value exceeds the predetermined false alarm threshold.

A method for tracking one or more portable devices in real time to detect theft of the one or more portable devices, the method comprising the steps of:

• interrogating a Radio Frequency Identification (RFID) tag via a RFID reader during successive sweep intervals, wherein the sweep interval represents active state of the RFID reader, and the RFID tag and the RFID reader reside in a wearable band adapted to be worn by a user and the one or more portable devices respectively or vice versa;
• receiving one or more pairing information from the RFID tag;
• performing selective error correction using hamming code on the pairing information received from the RFID tag;
• comparing the received one or more pairing information with corresponding one or more pairing information stored in the RFID reader;
• and
• generating an alert signal via the wearable band or the one or more portable devices when the received one or more pairing information does not match with the corresponding one or more pairing information stored in the RFID reader.

A method for tracking one or more portable devices in real time to detect theft of the one or more portable devices, the method comprising the steps of:

• interrogating a Radio Frequency Identification (RFID) tag via a RFID reader during successive sweep intervals, wherein the sweep interval represents active state of the RFID reader, and the RFID tag and the RFID reader reside in a wearable band adapted to be worn by a user and the one or more portable devices respectively or vice versa;
• receiving one or more pairing information from the RFID tag;
• mapping information related to multiple portable devices with information stored in a lookup table in the wearable band, wherein the wearable band comprises multiple RFID tags;
• comparing the received one or more pairing information with corresponding one or more pairing information stored in the RFID reader;
• and
• generating an alert signal via the wearable band or the one or more portable devices when the received one or more pairing information does not match with the corresponding one or more pairing information stored in the RFID reader.

A system for tracking one or more portable devices in real time to detect theft of the one or more portable devices, the system comprising:

• one or more portable devices without processing capability, each comprising an RFID tag;
• one or more portable devices with processing capability, each comprising a Radio frequency Identification (RFID) reader configured to interrogate an RFID tag during successive sweep intervals, wherein the sweep interval represents active state of the RFID reader;
• a wearable-band adapted to be worn by a user, wherein the wearable band includes either one of the portable devices without processing capability, or one of the portable devices with processing capability;
• wherein the one or more portable devices with processing capability are configured to:
• receive one or more pairing information from an RFID tag
• compare the received one or more pairing information with corresponding one or more pairing information stored in the RFID reader;
• and
• generate an alert signal via the wearable-band or the one or more portable devices when the received one or more pairing information does not match with the corresponding one or more pairing information stored in the RFID reader, wherein generating an alert signal via the wearable band or the one or more portable devices comprises:
• measuring a first time value at the start of the sweep interval;
• measuring a second time value when the received one or more pairing information does not match with the one or more pairing information stored in the RFID reader;
• calculating a difference between the second time value and the first time value to obtain a third time value;
• comparing the third time value with a predetermined false alarm threshold value;
• and
• generating an alert signal when the third time value exceeds the predetermined false alarm threshold value.

A system for tracking one or more portable devices in real time to detect theft of the one or more portable devices, the system comprising:

• one or more portable devices without processing capability, each comprising an RFID tag;
• one or more portable devices with processing capability, each comprising a Radio frequency Identification (RFID) reader configured to interrogate an RFID tag during successive sweep intervals, wherein the sweep interval represents active state of the RFID reader;
• a wearable-band adapted to be worn by a user, wherein the wearable band includes either one of the portable devices without processing capability, or one of the portable devices with processing capability;
• wherein the one or more portable devices with processing capability are configured to:
• receive one or more pairing information from an RFID tag;
• perform selective error correction using hamming code on the pairing information received from the RFID tag;
• compare the received one or more pairing information with corresponding one or more pairing information stored in the RFID reader;
• and
• generate an alert signal via the wearable-band or the one or more portable devices when the received one or more pairing information does not match with the corresponding one or more pairing information stored in the RFID reader.