JP2010226435A - Key information providing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a key information providing system capable of periodically improving security by updating the key information of intrinsic information as random information with the use of a wireless communication system. <P>SOLUTION: The key information providing system includes a wireless communication device 2 having a function which detects a position, a communication device connected to a key device which locks or unlocks a key, and a management server 3 which manages a management area 4 involving the communication device. When detecting the wireless communication device within the management area on the basis of positional information obtained from the wireless communication device, the management server transmits the key information respectively corresponding to the wireless communication device and the communication device, and when receiving the key information corresponding to the key information received from the management server by the communication device from the wireless communication device, the key device locks or unlocks the key. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a key information providing system that provides key information to a mobile terminal using a wireless communication system.

  Some vehicles and the like incorporate a technique that allows a door to be opened and closed without using a key inserted into a hole by using a key incorporated in a wireless communication device. The wireless communication device may be a mobile phone or the like, and by registering car key information in the mobile phone, it is also possible to open and close the car door using the mobile phone.

  The key incorporating the wireless communication device can be applied to a building such as a home, and the door of the building can be opened and closed using a mobile phone in which key information is registered.

  On the other hand, what is recorded in the wireless communication device is fixed key information, and is one-way communication that always transmits the same key information from the wireless communication device side, so the wireless communication device itself is lost or stolen. Even if there is no communication, there is a risk that key information may be stolen when the communication is intercepted, and there is a problem in security.

  As means for unlocking and locking a building door, there are a case where comparison is made with information registered in advance by biometric authentication, a method using a card or a metal key, and the like.

  However, when using biometric authentication or a card and a metal key, it is necessary to go directly to the door to perform authentication, unlocking, locking, etc. If there was a theft, it was necessary to take measures such as replacing the lock each time for security reasons.

  Also, if you enter multiple buildings, you will need a unique key for each building, and you must have a key for each building, which is bulky or annoying and annoying which key belongs to which building was there.

JP 2003-253940 A

  In view of such circumstances, the present invention provides a key information providing system that improves security by periodically updating key information, which is unique information, as random information using a wireless communication system.

  The present invention includes a wireless communication device having a position detection function, a communication device connected to a lock device that performs unlocking or locking processing of a lock, and a management server that manages a management area that includes the communication device. The management server detects the wireless communication device in the management area based on the position information acquired from the wireless communication device, transmits key information corresponding to each of the wireless communication device and the communication device, and The present invention relates to a key information providing system in which the lock device performs unlocking or locking processing by receiving key information corresponding to key information received from the management server by the communication device from the wireless communication device.

  According to the present invention, a wireless communication device having a position detection function, a communication device connected to a lock device that performs unlocking or locking processing of a lock, and a management server that manages a management area that includes the communication device. And the management server transmits key information corresponding to each of the wireless communication device and the communication device when detecting the wireless communication device in the management area based on the position information acquired from the wireless communication device. Since the lock device performs unlocking or locking processing by receiving key information corresponding to the key information received from the management server by the communication device from the wireless communication device, for the specific wireless communication device Only the unlocking or locking process can be performed, and the key information can be updated to make it difficult to copy the key information. To volatilization.

It is a block diagram which shows the key information provision system of this invention. It is a block diagram which shows the structure of the portable terminal in this invention. It is a block diagram which shows the structure of the management server in this invention. It is a block diagram which shows the structure of the plant | facility in this invention. It is a flowchart which shows the positional information transmission process of the portable terminal in this invention. It is a flowchart which shows the process of the management server in this invention. It is a flowchart which shows the process at the time of the facility in this invention receiving key information from the management server. It is a flowchart which shows the process at the time of the facility in this invention receiving key information from a portable terminal. It is a flowchart which shows the process at the time of making changeable the positional information acquisition period from the portable terminal of the management server in this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a configuration diagram of a key information providing system 1 according to the present invention. First, the outline of the key information providing system 1 will be described with reference to FIG.

  The mobile terminal 2 that is a wireless communication device has a GPS function, receives a signal from an artificial satellite, and calculates a current location. In addition, the management server 3 manages the management area 4, and the location information of a plurality of facilities 5 a, 5 b,..., 5 n existing in the management area 4 is registered, and via the wireless network 6. The position information of the mobile terminal 2 registered in advance is acquired, and the key information is transmitted to the mobile terminal 2 and the facility 5.

  The management server 3 may manage a plurality of the management areas 4 and a plurality of the mobile terminals 2, and the management server 3 and the communication device of the facility 5 are connected via the wireless network 6. Instead, they may be connected by wire.

  Hereinafter, as an example, a case where one mobile terminal 2 and one management area 4 exist for one management server 3 and a plurality of facilities 5 exist in the management area 4 will be described.

  The management server 3 ascertains the location of the mobile terminal 2 based on the location information of the mobile terminal 2 acquired periodically, and when the mobile terminal 2 enters the management area 4, the mobile terminal 2 and the destination Corresponding key information (first key information to the portable terminal 2 and second key information to the facility 5) is transmitted to the facility 5.

  When the owner of the portable terminal 2 arrives at the facility 5, the first key information received from the management server 3 is transmitted to the communication device of the facility 5, so that the door of the facility 5, etc. The object to be driven is unlocked, locked, or opened / closed.

  Next, the configuration of the portable terminal 2 will be described with reference to FIG.

  The mobile terminal 2 receives a signal from a satellite and performs a calculation process with a GPS device 7 that calculates a current location from the signal, a wireless unit 8 that communicates with the communication device of the management server 3 and the facility 5 The CPU 9 includes a display unit 11 such as a display, an operation unit 12 such as button keys arranged in a predetermined number, and a storage unit 13, and the storage unit 13 records the first key information received from the management server 3. And a data processing program 15 for converting the current location information calculated by the GPS device 7 into wireless data.

  The portable terminal 2 receives a signal from a satellite by the GPS device 7 and calculates a current location based on the signal. The calculated current location information is processed according to the data processing program 15 and converted into wireless data, and then the wireless unit 8 transmits the location information of the portable terminal 2 to the management server 3. When the first key information of the facility 5 is received from the management server 3, the first key information is stored in the storage device 14, and the stored first key information is used in the facility 5. By doing so, the lock which is the drive target of the facility 5 is unlocked or locked.

  Next, the management server 3 will be described with reference to FIG.

  The management server 3 includes a wireless unit 16 that communicates with the portable terminal 2 and the facility 5, a CPU 17 that performs arithmetic processing, a display unit 18 such as a monitor, an operation unit 19 such as a mouse and a keyboard, and a storage unit. The storage unit 21 includes a cycle setting program 22, a position collation program 23, a distance calculation program 24, a destination discrimination program 25, a key information generation program 26, and a key information encryption program 27. And a storage device 28 such as a memory or HDD.

  The cycle setting program 22 has a function of determining in what cycle the location information of the current location that is constantly sent from the portable terminal 2 is acquired.

  Whether the location collation program 23 receives the location information of the current location sent from the mobile terminal 2 in the management area 4 where the facility 5 to be unlocked, locked, and opened / closed exists. It has a function to determine whether or not.

  In addition, the distance calculation program 24 is based on the location information from the portable terminal 2 that is determined by the location verification program 23 to be within the management area 4 where the target facility 5 exists. The distances to the facilities 5a, 5b,..., 5n existing inside are calculated.

  In the storage device 28, the registration number of the portable terminal 2 to be controlled and the registration number of the facility 5 that transmits the key information to each portable terminal 2 are stored in advance in association with each other. The distance calculation program 24 specifies the facility for calculating the distance based on the correspondence information.

  The destination discriminating program 25 has a function of selecting the facility 5 having the shortest distance from the current location as a destination based on the distance calculated by the distance calculating program 24.

  The key information generation program 26 generates a pair of key information in parallel with the distance detection between the portable terminal 2 and the facility 5 by the distance calculation program 24.

  The key information encryption program 27 has a function of encrypting key information using a key for encrypting key information stored in the storage device 28.

  The storage device 28 stores the encryption key and the registration number of the portable terminal 2 that is the control target of the management server 3 and the location information of the facility 5. Further, an unlocking / locking signal or an opening / closing signal sent from the portable terminal 2 directly or from the communication device of the facility 5 is stored as a usage record.

  The management server 3 periodically acquires the location information of the mobile terminal 2, and determines whether the mobile terminal 2 is in the management area 4 where the facility 5 to be controlled is present each time. Yes. When the portable terminal 2 is in the management area 4, the positional information of the portable terminal 2 is compared with the positional information of the facilities 5a, 5b, ..., 5n existing in the management area 4. The closest facility 5 is selected as the destination. In parallel with the comparison of the position information, key information is generated and encrypted, and after the destination is determined by the destination discriminating program 25, the CPU 17 uses the radio unit 16 and the portable terminal 2 and the facility 5 that is the destination. The key information corresponding to each is transmitted. After transmitting the key information, the location information of the mobile terminal 2 is acquired again according to a preset cycle. If the mobile terminal 2 exists in the management area 4, the key information is generated and encrypted, The process of transmitting to the portable terminal 2 and the facility 5 is repeated.

  When the facility 5 is unlocked or locked by the portable terminal 2, a usage signal is issued from the portable terminal 2 or the facility 5 and stored in the storage device 28 as a usage record.

  The management server 3 can operate without encrypting the key information, but it is desirable to encrypt the key information in order to improve security. Further, as means for further improving security, a password may be required when using the key information. By notifying the owner of the portable terminal 2 offline such as a paper medium, the password can be remarkably reduced in the probability of being misused when it is stolen or lost.

  The generation and transmission of the first key information and the second key information from the management server 3 can also be performed by a request from the portable terminal 2. At this time, the management server 3 may newly generate and transmit key information, or may transmit the previously transmitted key information again.

  Next, referring to FIG. 4, the facility 5 that is the destination will be described.

  The facility 5 includes a communication device 29 that communicates with the portable terminal 2 and the management server 3 and a lock device 31 that includes a drive object that is unlocked / locked or opened / closed. .

  The communication device 29 receives first key information and second key information from the portable terminal 2 and the management server 3, and sends a usage signal when the first key information of the portable terminal 2 is used. A wireless unit 32 for transmitting to the CPU, a CPU 33 for performing arithmetic processing, a timer 34 connected to the CPU 33, a display unit 35 such as a display, and an operation unit 36 such as a button key or a touch panel arranged in a predetermined number. , An output unit 37 for issuing a command to the lock device 31 and a storage unit 38.

  The storage unit 38 includes a storage device 39 such as an HDD or a memory, a key information update program 41, an decryption program 42, and a key information collation program 43. The storage device 39 sequentially stores the second key information sent from the management server 3, and the key information update program 41 sends an activation signal and a set time to the timer 34, and the end from the timer 34 is completed. The second key information from the management server 3 is sequentially deleted from the storage device 39 by a signal.

  The decryption program 42 has a function of canceling the encrypted first key information and second key information, and the key information collation program 43 is transmitted from the portable terminal 2 by the communication device 29. When the first key information is received, it is searched whether or not there is the corresponding second key information in the storage device 39. If there is, the output unit 37 is unlocked or locked. Has the function of issuing instructions.

  When the communication device 29 receives the second key information from the management server 3, the second key information is decrypted by the decryption program 42, and the decrypted second key information is stored in the storage device 29. While being stored in the device 39, a start signal is issued together with a preset time value for the timer 34. When the set time has elapsed, the timer 34 issues an end signal, and the key information update program 41 deletes the corresponding second key information from the storage device 39 according to the end signal. This process is performed regardless of the frequency of reception of the second key information from the management server 3, and the received second key information is sequentially decrypted in the storage device 39 after being decrypted by the decryption program 42. It is stored, and is sequentially deleted by the key information update program 41 after a predetermined time has elapsed. Note that the storage device 39 may be a FIFO (First In First Out) memory.

  When the first key information is received from the portable terminal 2 during the above process, the key information collation program 43 corresponds to the first key information received after being decrypted by the decryption program 42. When the second key information is searched from the storage device 39 and the corresponding second key information is present, an unlocking or locking command is issued to the output unit 37, and the wireless unit 32 is turned on. The use signal of the portable terminal 2 is transmitted to the management server 3 via the above.

  Next, in FIG. 5, the process of the portable terminal 2 will be described using a flowchart.

  First, when the mobile terminal 2 is turned on, the mobile terminal 2 is activated.

  STEP: 01 When the portable terminal 2 is activated, a GPS receiver included in the GPS device 7 receives a GPS signal from a satellite.

  (Step 02) The GPS signal received from the satellite is arithmetically processed by the arithmetic processing unit provided in the GPS device 7 to calculate the current location of the mobile terminal 2.

  (Step 03) When the current location of the portable terminal 2 is calculated, the data processing program 15 converts the current location into data that can be transmitted wirelessly.

  (Step 04) The location information of the current location of the portable terminal 2 converted by the data processing program 15 is transmitted from the wireless unit 8 to the management server 3.

  Note that the above STEP: 01 to STEP: 04 are automatically performed when the portable terminal 2 is turned on, and the location information of the current location of the portable terminal 2 is sent to the management server 3 until the portable terminal 2 is turned off. Send regularly. Further, the mobile terminal 2 may transmit position information in response to a request from the management server 3.

  Although not shown, the portable terminal 2 receives the encrypted first key information from the management server 3 and stores it in the storage device 14. If another first key information is already stored in the storage device 14 when the first key information is received from the management server 3, the first key information already stored is newly received. Overwritten with the first key information.

  Next, referring to FIG. 6, the processing of the management server 3 will be described using a flowchart.

  The management server 3 is activated when the power is turned on, and processing is started simultaneously with the activation.

  (STEP: 11, STEP: 12) The management server 3 periodically acquires position information sent from the portable terminal 2 in accordance with the preset cycle setting program 22. The management server 3 may obtain position information from the portable terminal 2 by periodically transmitting a request signal for position information to the portable terminal 2 according to the cycle setting program 22.

  STEP: 13 Based on the location information acquired from the mobile terminal 2, the location verification program 23 determines whether the mobile terminal 2 is in the management area 4 where the facility 5 to be controlled exists. ing. If it is determined that the portable terminal 2 is not in the management area 4, the process returns to STEP: 11, the position information of the portable terminal 2 is acquired according to the cycle setting program 22, and again by the position matching program 23. Whether it is in the management area 4 or not is discriminated.

  (Step 14) When the position collation program 23 determines that the portable terminal 2 is in the management area 4, the distance calculation program 24 records the information in the portable device 2 and the storage device 28 in advance. Further, the distances to the facilities 5a, 5b,. In parallel with the calculation of the distances from the facilities 5a, 5b,..., 5n, the management server 3 has the key information generation program 26 execute a pair of key information, that is, first key information and second key information. The generated first key information and second key information are respectively encrypted by the key information encryption program 27 based on the encryption key stored in the storage device 28.

  STEP: 15 When the distance calculation program 24 calculates the distance to each of the facilities 5a, 5b,..., 5n, the destination discrimination program 25 executes the facilities 5a, 5b,. The facility 5 that is the closest among 5n is determined as the destination.

  STEP: 16 When the destination is determined, the management server 3 generates the first key generated and encrypted by the key information generation program 26 and the key information encryption program 27 for the portable terminal 2 and the facility 5. Each of the information and the second key information is transmitted. After the key information is transmitted, the process returns to STEP: 11 again, and the processes of STEP: 11 to STEP: 16 are repeated until the management server 3 is turned off.

  Next, in FIG. 7 and FIG. 8, the processing of the facility 5 as the destination will be described using flowcharts. FIG. 7 shows a flowchart when the second key information is received from the management server 3, and FIG. 8 shows a flowchart when the first key information is received from the portable terminal 2.

  (Step 21) The communication device 29 and the lock device 31 included in the facility 5 are already turned on, and the process is started when the second key information is received from the management server 3.

  (Step 22) When the communication device 29 receives the second key information from the wireless unit 32, the key information update program 41 starts up, and a preset time, for example 5 When the minute is transmitted, the timer 34 is started.

  (Step 23) The second key information received by the wireless unit 32 is decrypted by the decryption program 42.

  (Step 24) The second key information whose encryption has been released is stored in the storage device 39.

  STEP: 25 When a predetermined time, for example, 5 minutes elapses after the activation signal is transmitted to the timer 34, the timer 34 transmits an end signal to the key information update program 41 and ends.

  (Step 26) The key information update program 41 deletes the second key information stored in the storage device 39 in accordance with a signal from the timer 34.

  The above process is executed every time the second key information is received, and the processing speed and the update speed are not affected by the reception frequency of the second key information.

  Next, a case where the communication device 29 receives first key information from the portable terminal 2 will be described.

  STEP: 31 As in the case of FIG. 7, the communication device 29 and the lock device 31 included in the facility 5 are already turned on and are processed when the first key information is received from the portable terminal 2. Is started.

  (Step 32) When the first key information is received from the wireless unit 32, the descrambling program 42 is first started up and the encryption of the first key information is released.

  (Step 33) After the encryption of the first key information is released, the key information collation program 43 searches the second key information stored in the storage device 39.

  (Step 34) After searching for the second key information, the key information collation program 43 determines whether or not there is second key information corresponding to the received first key information in the searched second key information.

  STEP: 35 If the corresponding second key information does not exist, the process ends at that stage, and if it exists, the lock device 31 receives the information from the portable terminal 2 via the output unit 37. As requested, a command such as unlocking or locking is issued, and the locking device 31 performs processing according to the command from the communication device 29.

  STEP: 36 After the command is notified to the lock device 31, a processing signal such as unlocking or locking is transmitted from the wireless unit 32 to the management server 3, and the processing is completed.

  As described above, the portable terminal 2 can be used for the plurality of facilities 5 managed by the management server 3 as long as it is registered in the management server 3. There is no need to carry a key, and the trouble of holding multiple keys can be eliminated.

  Further, in the facility 5, as soon as new second key information is acquired, the old second key information is not deleted, but is retained for a certain period of time, for example, about 5 minutes, and used as an effective key. Since the terminal 2 or the facility 5 cannot receive the key information, the reception status of the key information in the portable terminal 2 and the facility 5 is shifted, and the first key information held by the portable terminal 2 and the facility 5 Even when there is a deviation from the second key information, it can be authenticated.

  Even if the portable terminal 2 that receives the first key information is lost, stolen, or duplicated, the portable terminal 2 can be invalidated by deleting the registration of the portable terminal 2 from the management server 3. Furthermore, since the first key information is periodically updated as random key information, security can be greatly improved.

  Also, if the registration of the portable terminal 2 is deleted from the management server 3, the portable terminal 2 cannot be used for the target facility 5, so that the user of the portable terminal 2 changes However, it is not necessary to change the lock device 31 for each lock, and the cost can be reduced.

  Next, in FIG. 9, as a modification of the present embodiment, a method for changing the cycle in which the management server 3 acquires the position information of the mobile terminal 2 will be described using a flowchart.

  STEP: 41, STEP: 42 The management server 3 periodically acquires position information A, which is initial information constantly sent from the portable terminal 2, in accordance with the cycle setting program 22 in which an acquisition cycle is set in advance. .

  (Step 43) Based on the position information A acquired from the mobile terminal 2, the location verification program 23 determines whether the mobile terminal 2 is in the management area 4 where the facility 5 to be controlled exists. To do. If it is determined that the portable terminal 2 is not in the management area 4, the position information A is discarded and then the process returns to STEP 41, and the position information of the portable terminal 2 is passed after a predetermined time according to the period setting program 22. A is acquired, and it is determined again whether or not it is in the management area 4 by the position collation program 23.

  STEP: 44 When the position collation program 23 determines that the mobile terminal 2 is in the management area 4, the position information A is held in the storage device 28, and the position information A is stored based on the held position information A. The distance calculation program 24 calculates the distance between the mobile terminal 2 and the facilities 5a, 5b,..., 5n that are the control targets of the mobile terminal 2 recorded in the storage device 28 in advance.

  STEP: 45 When the distance calculation program 24 calculates the distance to each of the facilities 5a, 5b,..., 5n, the destination discrimination program 25 executes the facilities 5a, 5b,. The facility 5 that is the closest among 5n is determined as the destination.

  STEP: 46, STEP: 47 After the destination is determined, the management server 3 acquires the position information B of the portable terminal 2 after a certain period of time according to the cycle setting program 22.

  (Step 48) Based on the position information B acquired from the portable terminal 2, the position collation program 23 determines whether or not the portable terminal 2 is in the management area 4. When it is determined that the portable terminal 2 is not in the management area 4, the position information A stored in the storage device 28 and the acquired position information B are discarded, and then the process returns to STEP: 41, and the cycle setting is performed. The position information A of the portable terminal 2 is acquired after a predetermined time according to the program 22, and it is determined again by the position collation program 23 whether it is in the management area 4.

  (Step 49) When the position matching program 23 determines that the position information B is in the management area 4, the position information B is stored in the storage device 28 as well as the position information A. Thus, the position information A and the position information B are compared.

  STEP: 50 According to the comparison program, the moving speed of the mobile terminal 2 is faster than a predetermined value set in advance, or the location of the mobile terminal 2 is closer to a destination than a predetermined value set in advance. Is determined. As a result of the comparison, if both the speed and the location are within the range of the predetermined value, the position information A stored in the storage device 28 is discarded, and the portable terminal after the elapse of a certain time according to the cycle setting program 22 2 is acquired, whether or not the position information C is in the management area 4 and comparison between the position information B and the position information C is performed.

  STEP: 51 The comparison result between the position information A and the position information B is faster than a predetermined value at which the moving speed of the mobile terminal 2 is set in advance, or is higher than a predetermined value at which the location of the mobile terminal 2 is set in advance. If either or both of them are close to the destination, the period setting program 22 acquires the position information acquisition period of the portable terminal 2, that is, the period for acquiring the position information, based on the comparison result. Change to

  Note that the processing of STEP: 41 to STEP: 51 is performed in parallel with STEP 11 to STEP: 16 of FIG.

  As described above, since the acquisition cycle of the position information of the mobile terminal 2 can be changed according to the moving speed of the mobile terminal 2 and the distance to the destination, the first key information, the second key Improving security by advancing the transmission cycle of key information, delaying the transmission cycle of the first key information and second key information if away from the destination, reducing the burden on the management server 3, etc. The operational efficiency of the management server 3 can be improved.

  In addition, this invention is not limited to the Example mentioned above, A various deformation | transformation can be carried out in the range which does not deviate from the meaning of this invention.

  For example, in the above-described embodiment, the case where the communication device 29 of the facility 5 receives the first key information from the portable terminal 2 and collates it with the second key information held by itself is described as an example. However, the lock device 31 of the facility 5 includes a receiving unit that receives the first key information from the portable terminal 2, and the lock device 31 receives the second key information received from the management server 3 by the communication device 29. And the first key information received from the portable terminal 2 may be collated.

  In the above-described embodiment, the case where the destination determination program 25 of the management server 3 specifies one facility 5 as a destination from the plurality of facilities 5 has been described as an example. However, the destination discriminating program 25 discriminates all the facilities 5 whose distances calculated by the distance calculating program 24 are within a predetermined value as the destinations, and the management server 3 determines each of the plurality of facilities 5. You may comprise so that 2nd key information may be transmitted. In this case, different second key information may be transmitted for each facility 5, and a plurality of first key information corresponding to each second key information may be transmitted to the mobile terminal 2.

  Furthermore, in the above-described embodiment, the case where a plurality of the facilities 5 exist in one management area 4 has been described as an example. However, the present invention is not limited to this, and one management area 4 may be set around one facility 5. In this case, the destination discriminating program 25 of the management server 3 may discriminate one of the facilities 5 closest to the facility 5 in the plurality of management areas 4 as a destination. The facility 5 may be determined as the destination.

  Note that the position verification program 23 of the management server 3 may determine whether it is in the management area 4 based on position information (coordinate information), or may be determined in advance by the distance calculation program 24. It may be determined whether or not it is within the management area 4 according to the calculated distance.

  Further, the period for acquiring the position information from the portable terminal 2 may be changed according to the determination result of whether or not the area is within the management area 4 in STEP: 43 of FIG. 9 described above. For example, the first cycle when outside the management area 4 and the second cycle shorter than the first cycle when inside the management area 4 are stored in advance, and according to the determination result of STEP: 43, Subsequent cycles may be changed.

DESCRIPTION OF SYMBOLS 1 Key information provision system 2 Portable terminal 3 Management server 4 Management area 5 Facility 7 GPS apparatus 8 Radio | wireless part 13 Storage part 16 Radio | wireless part 21 Storage part 29 Communication apparatus 31 Locking device 32 Radio | wireless part 38 Storage part

Claims (1)

  A wireless communication device having a position detection function; a communication device connected to a lock device that performs unlocking or locking processing of the lock; and a management server that manages a management area that includes the communication device. When the wireless communication device is detected in the management area based on the position information acquired from the wireless communication device, key information corresponding to each of the wireless communication device and the communication device is transmitted, and the communication device A key information providing system in which the lock device performs unlocking or locking processing by receiving key information corresponding to key information received from a management server from the wireless communication device.

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