# US 12,007,490 B2 · Wireless location assisted zone guidance system incorporating secure transmission of location > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,007,490 B2 - Document ID: US12007490B2 - Status: Granted - Kind: B2 - Application number: 17/026,154 - Filed: 2020-09-18 - Published: 2021-03-18 - Granted: 2024-06-11 - Earliest claimed: 2019-09-18 - Assignees: GPSip, Inc. - Applicants: GPSip, Inc. - Inventors: Rodney P. Landers - Web page: https://patentgrep.com/patent/US12007490B2 ## CPC - G01S 19/42: Determining position - G01S 19/30: code related {(G01S19/246 takes precedence)} - G06F 21/602: {Providing cryptographic facilities or services} - G08B 21/0225: {Monitoring making use of different thresholds, e.g. for different alarm levels} - G08B 21/0236: {Threshold setting} - G08B 21/0261: {System arrangements wherein the object is to detect trespassing over a fixed physical boundary, e.g. the end of a garden} - G08B 21/0269: {System arrangements wherein the object is to detect the exact location of child or item using a navigation satellite system, e.g. GPS} - H04W 4/022: {with dynamic range variability} - H04W 4/029: Location-based management or tracking services - H04W 12/02: Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII] - H04W 12/63: Location-dependent; Proximity-dependent - G06F 2221/2111: Location-sensitive, e.g. geographical location, GPS - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A fully self-contained portable location tracking device autonomously compares a current location with a latitude-longitude map stored in memory. The latitude-longitude map stores guidance zone values indicative of a predetermined safe zone, progressive alert zones, and a predetermined reference point. The guidance zone values represent actions to be taken based upon current location. When initiated by some combination of current location or zone value, location history, and time, or when otherwise queried, the tracking device transmits the offset from reference location, rather than actual current location data, to at least one wireless communications monitoring apparatus. When further security is desired, the transmitted offset is also digitally encrypted or otherwise obfuscated. The monitoring apparatus also stores a copy of the latitude-longitude map and reference point. Using the received offset, the monitoring apparatus knows both the location of the location tracking device and the actions to be taken based upon current location. ## Claims ### Claim 1 In combination, a portable location tracking device and a monitoring apparatus, said portable location tracking device having: a GPS location determination apparatus configured to determine an instantaneous latitude-longitude location of said portable location tracking device; memory containing a two-dimensional data array corresponding to longitude and latitude; a secret reference point within said two-dimensional array that is privately shared with said monitoring apparatus; and a data exchange apparatus configured to transmit an offset between said instantaneous latitude-longitude location of said portable location tracking device and said secret reference point; said monitoring apparatus having: a data exchange apparatus configured to receive said offset between said instantaneous latitude-longitude location of said portable location tracking device and said secret reference point from said portable location tracking device data exchange apparatus; and memory containing a two-dimensional data array corresponding to said portable location tracking device two-dimensional array, and said privately shared reference point within said monitoring apparatus two-dimensional array corresponding to said portable location tracking device secret reference point; said monitoring apparatus configured to apply said received offset between said instantaneous latitude-longitude location of said portable location tracking device and said secret reference point to said privately shared reference point within said monitoring apparatus two-dimensional array and thereby determine said instantaneous latitude-longitude location of said portable location tracking device; wherein said data exchange apparatus is configured to add data noise to said offset transmission and thereby further obfuscate said instantaneous latitude-longitude location of said portable location tracking device within said transmission. ### Claim 2 (depends on 1) The combination portable location tracking device and monitoring apparatus of claim 1, wherein said portable location tracking device further comprises: at least one behavioral guidance stimulation apparatus; a processor; and a plurality of guidance zones defined using said latitude and longitude information, each one of said plurality of guidance zones having an associated unique set of characteristics used by said processor to provide behavioral guidance stimulation through said behavioral guidance stimulation apparatus; wherein each data value stored in said data table identifies a one of said plurality of guidance zones. ### Claim 3 (depends on 1) The combination portable location tracking device and monitoring apparatus of claim 1, wherein said secret reference point and privately shared reference point are both altered subsequent to at least one data transmission from said portable location tracking device data exchange apparatus to said monitoring apparatus data exchange apparatus. ### Claim 4 (depends on 1) The combination portable location tracking device and monitoring apparatus of claim 1, wherein said added data noise further comprises data resulting from the application of an encryption algorithm to said offset between said instantaneous latitude-longitude location of said portable location tracking device and said secret reference point. ### Claim 5 (depends on 1) The combination portable location tracking device and monitoring apparatus of claim 1, wherein said added data noise further comprises pseudo-randomly generated data fill. ### Claim 6 A method of securely transmitting an instantaneous location of a portable location tracking device to a monitoring apparatus, comprising the steps of: generating a two-dimensional data array representing longitude and latitude within each of said portable location tracking device and said monitoring apparatus; storing a privately held reference point within said generated two-dimensional data array into each of said portable location tracking device and said monitoring apparatus; transmitting an offset between a data table representation of an instantaneous location of a portable location tracking device and said privately held reference point to said monitoring apparatus; and applying said transmitted offset to said monitoring apparatus two-dimensional data array reference point to locate said data table representation of an instantaneous location of said portable location tracking device; further comprising the step of adding data noise to said offset transmission and thereby further obfuscating said instantaneous location of said portable location tracking device within said transmission. ### Claim 7 (depends on 6) The method of securely transmitting an instantaneous location of a portable location tracking device to a monitoring apparatus of claim 6, further comprising the steps of: storing a value at each individual two-dimensional data array location representing a single behavioral guidance zone selected from a plurality of distinct behavioral guidance zones; storing a unique set of behavioral processes associated with each one of said plurality of distinct behavioral guidance zones in electronically accessible memory; electronically retrieving said stored value representing said single behavioral guidance zone from an individual array location defined by said latitudinal offset and said longitudinal offset; and electronically retrieving said unique set of behavioral processes associated with said stored value. ### Claim 8 (depends on 6) The method of securely transmitting an instantaneous location of a portable location tracking device to a monitoring apparatus of claim 6, wherein said step of adding data noise to said offset transmission comprises applying an encryption algorithm to said offset between said data table representation of an instantaneous location of said portable location tracking device and said privately held reference point. ### Claim 9 (depends on 6) The method of securely transmitting an instantaneous location of a portable location tracking device to a monitoring apparatus of claim 6, wherein said step of adding data noise to said offset transmission comprises adding pseudo-randomly generated data fill. ### Claim 10 (depends on 6) The method of securely transmitting an instantaneous location of a portable location tracking device to a monitoring apparatus of claim 6, wherein said step of adding data noise to said offset transmission comprises altering said privately held reference points subsequent to at least one transmission of said offset from said portable location tracking device to said monitoring apparatus.