JP2004287296A - Advertisement distribution system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To selectively distribute detailed information to consumers interested in an advertisement. <P>SOLUTION: An advertisement distribution system 20 distributes an advertisement to a user having a portable type user terminal 10 with a communication function. A stay detection part 24 detects that the user is staying in an area in which an advertising medium such as a poster installed in a street can be browsed. When the stay detection part 24 detects that the user is staying there, a staying purpose decision part 26 decides whether the user is staying in the browsable area for the purpose of browsing the advertising medium or for another purpose. When the staying purpose decision part 26 decides that the user is staying in the browsable area for the purpose of browsing the advertising medium, a distribution processing part 28 distributes to the user the detailed information on the advertising medium. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an advertisement distribution system.
[0002]
[Prior art]
Advertising media such as signboards and posters are installed on streets, street corners, and stores. Such advertising media is designed to draw attention to people passing by, such as using a celebrity as a model or devising a catch phrase. However, if the advertising medium is noticed by consumers and you are looking at the advertising medium, even if you want to know the detailed information of the advertisement, if you move away from the advertising medium, the interest will fade Probability is high.
[0003]
2. Description of the Related Art Conventionally, a technique is known in which, when a user holding a mobile communication device is in a predetermined area, advertisement information such as a discount coupon is transmitted to the user's mobile communication device (Patent Document 1). Here, a desired product and an area in which an advertisement is desired to be viewed are set for each user in the member database. Advertising information is sent.
[Patent Document 1]
JP-A-2002-259821
[Problems to be solved by the invention]
However, in the above-described conventional method, the user needs to set an area in which an advertisement is to be viewed and a desired product in advance, and obtains information on a product of interest after actually appearing on the street. I didn't.
[0005]
The present invention has been made in view of the above problems, and an object of the present invention is to provide a technique for distributing detailed information on an advertisement to a consumer interested in an advertisement medium installed on a street.
[0006]
[Means for Solving the Problems]
According to the present invention, there is provided an advertisement distribution system for distributing an advertisement to a user holding a mobile terminal having a communication function, wherein the user stays in a browsable area provided on a street where an advertisement medium can be browsed. And a distribution processing unit that distributes detailed information about the advertisement medium to the user when the visit detection unit detects the visit of the user. Is done.
[0007]
In this way, detailed information can be selectively delivered to users who are likely to be interested in the advertising media installed on the street, so that the convenience of the users can be improved, The advertising effect of the advertisement can be efficiently increased.
[0008]
The advertisement distribution system according to the present invention is configured such that, when the stay detection unit detects the stay of the user, whether the user is staying in the browsable area for browsing the advertisement medium, or for another purpose. The distribution processing unit may further include a stay purpose determination unit that determines whether the user is staying in the browseable area. The distribution processing unit may be configured so that the user stays in the browseable area in order for the user to browse the advertisement medium. , It is possible to deliver detailed information on the advertisement medium to the user.
[0009]
In this way, even among users staying in the browsable area, detailed information of the advertising medium can be selectively delivered to users who are likely to be browsing the advertising medium. Can be improved, and the advertising effect of the advertisement can be efficiently increased. In addition, since detailed information is not delivered to a user who is staying in the browsable area for another purpose, the user does not receive uninteresting information and does not have to worry about it.
[0010]
The advertisement distribution system of the present invention can further include a position information acquisition unit that acquires the position information of the user, and the stay detection unit is configured to determine whether the user has been in the area for a certain period of time based on the position information of the user. It can be determined that the user is staying in the area.
[0011]
In this way, it is possible to distribute detailed information selectively to a user who is interested in the advertisement medium and stops in front of the advertisement medium and is watching the advertisement medium, instead of merely passing through the browsable area. Can increase the advertising effect of the advertisement.
[0012]
In the advertisement distribution system of the present invention, the stay purpose determination unit can detect whether or not the browsable area includes the other purpose area where the user stays for another purpose, and determines whether the browsable area is When the other purpose area is included, the timing to achieve the other purpose is detected, and if the user stays in the viewable area after the timing, the user can view the advertisement medium for viewing. It can be determined that you are staying in the area.
[0013]
Here, the other purpose is, for example, waiting for a traffic light or waiting for a bus or a train at a bus stop or a platform of a train.
[0014]
In the advertisement distribution system of the present invention, the viewable area may be set to a size according to the type, size, or installation position of the advertisement medium.
[0015]
The advertisement distribution system of the present invention may further include a user information storage unit that stores the characteristics of the user, and an advertisement management information storage unit that stores the characteristics of the target person who distributes detailed information on the advertisement medium, The distribution processing unit refers to the user information storage unit and the advertisement management information storage unit, and can distribute detailed information to the user when the characteristics of the user match the characteristics of the target person.
[0016]
As a result, it is possible to selectively deliver detailed information only to the target person targeted by the provider of the advertisement medium, and it is possible to enhance the advertising effect of the advertisement.
[0017]
The advertisement distribution system of the present invention can further include a distribution record storage unit that stores a distribution record of detailed information to the user, and the distribution processing unit has distributed detailed information regarding the same advertisement medium in the past. To a certain user, detailed information can be transmitted after a certain period of time has passed since the past distribution.
[0018]
Thereby, it is possible to prevent the detailed information having the same content from being delivered to the user many times, and the user from being troubled.
[0019]
An advertisement distribution system according to the present invention includes a map information storage unit that stores map information around a position including an advertisement medium installed therein, and a user in an area around the viewable area to guide the user to the viewable area. The distribution processing unit may further include, when the guidance target person detection unit detects that the user is in the area, the position where the user is located and the advertisement. Map information including the position where the medium is installed can be distributed.
[0020]
As a result, the number of users to whom detailed information of the advertisement medium is distributed can be increased, and the advertising effect of the advertisement can be enhanced.
[0021]
It is to be noted that any combination of the above-described components and any conversion of the expression of the present invention between a method, an apparatus, a system, a recording medium, a computer program, and the like are also effective as embodiments of the present invention.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a diagram illustrating a relationship between the user terminal 10 and the advertisement distribution system 20 according to the embodiment of the present invention.
[0023]
The user terminal 10 is a mobile terminal having a communication function, such as a mobile phone or a PDA, and capable of presenting various types of information distributed from the advertisement distribution system 20. The advertisement medium 14 is a poster, a signboard, an electric bulletin board, or the like installed on a street.
[0024]
In the advertisement distribution system 20, the database 29 stores user information such as a user ID, a user characteristic, and a user's mail address, and poster information such as area information and detailed information. The server 21 acquires the position information of the user 12 from the user terminal 10 together with the user ID. The server 21 detects that the user 12 is viewing the advertisement medium 14, and transmits detailed information on the advertisement medium corresponding to the mail address of the user 12 based on the user ID. Here, the server 21 and the database 29 are connected via the Internet 50, but they may be integrally configured.
[0025]
(First embodiment)
FIG. 2 is a block diagram illustrating an internal configuration of the advertisement distribution system 20 according to the first embodiment of the present invention. The server 21 includes a location information acquisition unit 22, a stay detection unit 24, a stay purpose determination unit 26, and a distribution processing unit 28. The database 29 includes a user position information storage unit 30, an area information storage unit 32, another purpose information storage unit 34, a user information storage unit 36, an advertisement management information storage unit 38, a detailed information storage unit 40, and a distribution record storage unit 42. .
[0026]
Each component of the advertisement distribution system 20 is, in terms of hardware components, a CPU of an arbitrary computer, a memory, a program loaded into the memory to realize the components of the drawing, and a storage unit such as a hard disk for storing the program. It will be understood by those skilled in the art that there are various modifications of the method and apparatus for realizing, mainly, the interface for network connection. Each of the drawings to be described below shows a block of a functional unit, not a configuration of a hardware unit.
[0027]
The position information acquisition unit 22 acquires position information of a user holding the user terminal 10. The position information of the user can be acquired using the position detection function of the base station of the mobile phone network, for example, based on the radio wave reception state of the user terminal 10 held by the user. In addition, when the user holds the user terminal 10 with the GPS function, the information can be obtained using the GPS positioning function. Furthermore, while providing an IC tag to a user who uses the advertisement distribution system 20, a tag detector can be installed near an advertisement medium, and the position information of the user can be acquired by the tag detector. The user position information storage unit 30 stores user position information.
[0028]
The area information storage unit 32 stores, for each advertisement medium, information on an area where the advertisement medium can be viewed (hereinafter, simply referred to as a “viewable area”). The size of the browsable area is appropriately set according to the type and size of the advertisement medium and the position where the advertisement medium is installed. For example, when the advertisement medium is an electronic bulletin board and is installed on the roof of a building, the viewable area is set large because the range in which the advertisement medium can be viewed is large to some extent.
[0029]
The stay detection unit 24 refers to the user position information storage unit 30 and the area information storage unit 32 and detects whether the user is in a browsable area of any of the advertisement media based on the position information of the user. When the user is in the browsable area, the stay detecting unit 24 refers to the user position information storage unit 30 and calculates the time during which the user is in the browsable area. If the user is in the browsable area for a predetermined time or more, the stay detection unit 24 determines that the user is staying in the browsable area.
[0030]
The stay purpose determination unit 26 determines whether the user staying in the browsable area is staying in the browsable area because he / she is looking at the advertisement medium, or staying in the browsable area for another purpose. Determine if you are. In the present embodiment, when the user stays in the certain browsable area for more than the time required to achieve another purpose, the stay purpose determination unit 26 Judge that you are watching.
[0031]
The other purpose information storage unit 34 stores information on other purposes that may cause the user to stay at a certain position for a certain period of time or more. Other purposes are, for example, waiting for a signal or waiting for a bus or train at a bus stop or train platform. The other purpose information storage unit 34 stores the other purpose area where the user stays for another purpose and the required time required to achieve the purpose.
[0032]
The stay purpose determination unit 26 refers to the area information storage unit 32 and the other purpose information storage unit 34 to determine whether the browsable area includes the other purpose area. When the other purpose area is not included, the stay purpose determination unit 26 determines that the user is staying in the browsable area because the user is viewing the advertisement medium. On the other hand, when the advertisement distribution area includes the other purpose area, the stay purpose determination unit 26 detects the time during which the user stays in the viewable area, and the user stays in the viewable area for a necessary time or more. If so, it is determined that the user is staying in the advertisement distribution area to view the advertisement medium.
[0033]
The user information storage unit 36 stores, for each user, a user ID, a mail address of the user, and information indicating characteristics of the user.
[0034]
The advertisement management information storage unit 38 stores, for each advertisement, information indicating the characteristics of the user to whom the advertisement is to be distributed. The detailed information storage unit 40 stores, for each advertisement, detailed information to be actually transmitted to the user.
[0035]
The distribution processing unit 28 reads the characteristics of the user based on the user ID with reference to the user information storage unit 36, and refers to the advertisement management information storage unit 38 to determine whether the user is a distribution target of the detailed information of the advertisement. Is detected. If the user is the distribution target, the distribution processing unit 28 reads out the corresponding detailed information from the detailed information storage unit 40 and distributes the detailed information to the user's mail address.
[0036]
The distribution record storage unit 42 stores a distribution record of detailed information to the user of the distribution processing unit 28. The distribution processing unit 28 refers to the distribution record storage unit 42 before distributing the detailed information to the user, and if the detailed information of the same advertisement has been distributed to the user in the past, It detects whether time has passed. The distribution processing unit 28 transmits detailed information to the user when a predetermined time has elapsed since the past distribution, but does not distribute the detailed information to the user when the predetermined time has not elapsed. .
[0037]
FIG. 3 is a diagram illustrating an example of a data structure of the user position information storage unit 30. The user position information storage unit 30 includes a user ID column, a position (x, y) column, and a time column. The user ID column holds a user ID for identifying the user terminal 10 of the user. The position (x, y) column holds the position information of the user, and the time column holds the time at which the position information stored in the position (x, y) column was acquired. The location information acquisition unit 22 can acquire the location information of the user at predetermined time intervals, for example, and the user location information storage unit 30 stores the location information in association with the user ID together with the time at which the location information was acquired. When the user is in a building, for example, the position information acquisition unit 22 can also acquire information on the height of the position where the user is located.
[0038]
FIG. 4 is a diagram illustrating an example of a data structure of the area information storage unit 32. Here, a case where the advertisement medium is a poster will be described as an example. The area information storage unit 32 includes a poster ID column for identifying each poster, a start point position (x, y) column, and an end point position (x, y) column. The area of each poster is a range surrounded by the x-axis and the y-axis passing through the start point position and the end point position, respectively. Although only the x and y coordinates are described here, the area information storage unit 32 can also store information on the height at which each advertising medium is installed.
[0039]
FIG. 5 is a diagram illustrating an example of the data structure of the other purpose information storage unit 34. The other purpose column holds an object name that the user will stay at a place for some reason for a certain period of time. The start point position (x, y) column stores start point position information of an area where the user may stay to fulfill another purpose. The end point position (x, y) field holds end point position information of the area. The area where the user may stay to fulfill another purpose is a range surrounded by the x-axis and the y-axis passing through the start point position and the end point position, respectively. The required time column holds the time required by the user to fulfill another purpose. For example, "signal 1", "signal 2",... "Platform 1", "platform 2" are stored in the other purpose column. The required time of “Signal 1” is set to “60 seconds”. In other words, the signal 1 changes at an interval of 60 seconds, and the user waiting for the signal at the signal 1 stays in this area for at most 60 seconds. The required time for “platform 1” is set to “3 minutes”. Since the train arrives at the platform 1 every three minutes, the user waiting for the train to arrive at the platform stays in this area for at most three minutes.
[0040]
FIG. 6 is a diagram illustrating an example of a data structure of the user information storage unit 36. The user ID column holds a user ID for identifying a user who uses the service of the advertisement distribution system 20. Here, a gender column and an age column are provided as information indicating the characteristics of the user. The mail address column holds the mail address of the user terminal held by the user. For example, the user with the user ID “1” is a male, 25 years old, and the mail address is “taro@sansan.cp.jp”.
[0041]
FIG. 7 is a diagram illustrating an example of a data structure of the advertisement management information storage unit 38. The poster ID column identifies each poster, and corresponds to the poster ID column of the area information storage unit 32. The target gender column and the target age column hold the gender and age of the user to whom the detailed information related to the poster advertisement is distributed. For example, the detailed information on the advertisement with the poster ID “1” is distributed targeting men in their 20s.
[0042]
FIG. 8 is a diagram illustrating an example of a data structure of the detailed information storage unit 40. The detailed information of each advertising medium is associated with a poster ID.
[0043]
FIG. 9 is a diagram showing detailed information transmitted to the user. The detailed information can include a map from the position of the advertisement medium viewed by the user to a store where the product advertised in the advertisement medium can be purchased. Accordingly, a user who is interested in the advertisement by seeing the advertisement medium can immediately acquire knowledge for purchasing a product related to the advertisement, so that the advertisement effect of the advertisement can be enhanced and the user's convenience can be improved. Can also be enhanced.
[0044]
FIG. 10 is a flowchart illustrating a processing procedure of the advertisement distribution system 20 according to the present embodiment.
The position information acquisition unit 22 acquires the position information of the user from the user terminal held by the user. The stay detection unit 24 detects whether or not the user is staying in the browsable area with reference to the area information storage unit 32 based on the position information acquired by the position information acquisition unit 22 (S10). When the user is staying in a certain browsable area (Yes in S10), the stay purpose determination unit 26 detects whether or not the browsable area includes an area for another purpose (S12). If there is an area for another purpose (Yes in S12), the stay purpose determination unit 26 determines whether the required time for another purpose has elapsed (S14). When the required time for another purpose has elapsed (Yes in S14), the stay purpose determination unit 26 detects whether the user is still staying in the browsable area (S16). When the user is staying in the browsable area (Yes in S16), the stay purpose determining unit 26 determines that the user is staying in the browsable area to view the advertisement medium. Subsequently, the distribution processing unit 28 determines whether or not this user is a distribution target of the detailed information of the advertisement (S18). If there is no other purpose area in the browsable area in step 12 (No in S12), the process proceeds to step 18, and the distribution processing unit 28 determines whether or not this user is a distribution target of the detailed information of the advertisement.
[0045]
When the user is the distribution target person (Yes in S18), the distribution processing unit 28 refers to the distribution record storage unit 42 and detects whether the same detailed information of the advertisement has been transmitted to the user in the past. (S20). When the detailed information of the same advertisement has been transmitted to the user (Yes in S20), the distribution processing unit 28 determines whether a predetermined time has elapsed from the time of the distribution (S22). If the predetermined time has elapsed in step 22 (Yes in S22), or if it is detected in step 20 that the same detailed information of the advertisement has not been transmitted to the user (No in S20), the distribution processing unit 28 The detailed information of the corresponding advertisement is read from the detailed information storage unit 40, and the detailed information is transmitted to the user terminal (S24). The delivery record storage unit 42 stores a delivery record of the detailed information to the user (S26).
[0046]
If the user is not staying in the area in Step 10 (No in S10), if the user is not staying in the area in Step 16 (No in S16), if the user is not a distribution target person in Step 18, If the predetermined time has not elapsed in step S22 (No in S18) (No in S22), the process returns to step S10 and waits until the user stays in the browsable area of any of the advertisement media.
[0047]
According to the advertisement distribution system 20 of the present embodiment, the user holding the user terminal 10 browses the advertisement medium with an interest in an advertisement medium such as a poster installed on the street, thereby obtaining detailed information on the advertisement. Can be passively received, and user convenience can be improved. In addition, since detailed information of the advertisement is not delivered to a user who is not interested in the advertisement and is merely near the advertisement medium for another purpose, the user has a complicated feeling of receiving the detailed information of the advertisement which is not interested. No more. Since detailed information can be distributed to users who are interested in the advertisement, the advertising effect of the advertisement can be efficiently increased.
[0048]
(Second embodiment)
FIG. 11 is a block diagram illustrating an internal configuration of the advertisement distribution system 20 according to the second embodiment of the present invention. In the present embodiment, the advertisement distribution system 20 differs from the advertisement distribution system 20 in the first embodiment in further including a guidance processing unit 44 and a map information storage unit 46. In this embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and the description will be appropriately omitted.
[0049]
The advertisement distribution system 20 according to the present embodiment has a function of guiding a user who is not in the viewable area to move the user to the viewable area. The map information storage unit 46 stores map information around the area including the position where the advertising medium having the information in the area information storage unit 32 is installed. When the guidance processing unit 44 detects that the user is in the vicinity of the browsable area even if the user is not in the browsable area of any of the advertisement media based on the position information of the user, the guidance processing unit 44 reads the user information from the map information storage unit 46. , The map information including the current position of the user and the desired browsable area is extracted, and a guide map in which a mark indicating the current position of the user and the desired browsable area is added to the map information is created. The guidance processing unit 44 also refers to the user information storage unit 36 and the advertisement management information storage unit 38, selects an advertisement medium in which the user is a distribution target of the detailed information, and selects a browsable area of the advertisement medium. Is attached. The distribution processing unit 28 distributes the guidance map created by the guidance processing unit 44 to the user.
[0050]
In this way, when the user is near the advertisement medium, the user can be guided to a position where the advertisement medium can be viewed. If the user is interested in the advertisement medium and stays in the browsable area for a certain period of time or more, detailed information of the advertisement is delivered to the user by the same procedure as described in the first embodiment.
[0051]
The present invention has been described based on the embodiments. It should be understood by those skilled in the art that the embodiments are exemplifications, and that various modifications can be made to the combination of each component and each processing process, and that such modifications are also within the scope of the present invention. .
[0052]
In the above embodiment, the stay purpose determination unit 26 determines the user's stay purpose by referring to the required time required for the user to achieve another purpose with reference to the other purpose information storage unit 34. However, when the other purpose is to wait for a train or a bus at a platform or a bus stop, the stay purpose determination unit 26 refers to the train or bus operation schedule so that the user can view the advertisement medium. It is also possible to determine whether or not the user is staying in the advertisement distribution area in.
[0053]
Further, a description of the browsable area can be given on or around the advertisement medium itself. Thereby, when the user who browses the advertising medium wants to obtain detailed information, he or she stays in the browsable area without performing complicated processing such as performing some operation by himself on the user terminal 10 and becomes interested. You can receive detailed information of the advertisement.
[0054]
【The invention's effect】
ADVANTAGE OF THE INVENTION According to this invention, the detailed information regarding the advertisement can be delivered to the consumer interested in the advertisement medium installed in the street.
[Brief description of the drawings]
FIG. 1 is a diagram illustrating a relationship between a user terminal and an advertisement distribution system according to an embodiment of the present invention.
FIG. 2 is a block diagram showing an internal configuration of the advertisement distribution system according to the embodiment of the present invention.
FIG. 3 is a diagram illustrating an example of a data structure of a user position information storage unit.
FIG. 4 is a diagram illustrating an example of a data structure of an area information storage unit.
FIG. 5 is a diagram illustrating an example of a data structure of a different purpose information storage unit.
FIG. 6 is a diagram illustrating an example of a data structure of a user information storage unit.
FIG. 7 is a diagram illustrating an example of a data structure of an advertisement management information storage unit.
FIG. 8 is a diagram illustrating an example of a data structure of a detailed information storage unit.
FIG. 9 is a diagram showing detailed information transmitted to a user.
FIG. 10 is a flowchart illustrating a processing procedure of the advertisement distribution system according to the embodiment of the present invention.
FIG. 11 is a block diagram showing an internal configuration of an advertisement distribution system according to the embodiment of the present invention.
[Explanation of symbols]
Reference Signs List 10 user terminal, 12 user, 14 advertisement medium, 20 advertisement distribution system, 21 server, 22 location information acquisition section, 24 stay detection section, 26 stay purpose determination section, 28 distribution processing section, 29 database, 30 user location information storage section 32 area information storage unit, 34 other purpose information storage unit, 36 user information storage unit, 38 advertisement management information storage unit, 40 detailed information storage unit, 42 distribution record storage unit, 44 guidance processing unit, 50 Internet.

Claims (8)

An advertisement distribution system that distributes an advertisement to a user holding a mobile terminal having a communication function,
A stay detection unit that detects that the user is staying in a browsable area where the advertisement medium installed on the street can be viewed,
A delivery processing unit that, when the stay detection unit detects the stay of the user, delivers detailed information on the advertisement medium to the user;
An advertisement distribution system comprising: The advertisement distribution system according to claim 1,
When the stay detection unit detects the stay of the user, whether the user is staying in the viewable area for browsing the advertising medium, or in the viewable area for another purpose. It further includes a stay purpose judgment unit for judging whether or not you are staying,
The distribution processing unit, when the stay purpose determination unit determines that the user is staying in the browsable area for browsing the advertising medium, the detailed information on the advertising medium to the user, An advertisement distribution system characterized by distribution. In the advertisement distribution system according to claim 1 or 2,
A location information acquisition unit that acquires location information of the user;
The advertisement distribution system, wherein the stay detection unit determines that the user is staying in the area when the user is in the area for a predetermined time or more based on the position information of the user. The advertisement distribution system according to any one of claims 1 to 3,
The stay purpose determination unit detects whether the browsable area includes another purpose area where the user stays for the other purpose,
When the browsable area includes the other purpose area, a timing for achieving the other purpose is detected, and after the timing, when the user stays in the browsable area, the user Determines that the user is staying in the browsable area to browse the advertisement medium. The advertisement distribution system according to any one of claims 1 to 4,
The advertisement distribution system, wherein the viewable area is set to a size according to a type, a size, or an installation position of the advertisement medium. The advertisement distribution system according to any one of claims 1 to 5,
A user information storage unit for storing user characteristics,
An advertisement management information storage unit that stores characteristics of a target person that distributes detailed information about the advertisement medium,
Further comprising
The distribution processing unit, with reference to the user information storage unit and the advertisement management information storage unit, distributes the detailed information to the user when the characteristics of the user match the characteristics of the target person. An advertisement distribution system characterized by the following. The advertisement distribution system according to any one of claims 1 to 6,
A distribution record storage unit that stores a distribution record of the detailed information to the user,
The delivery processing unit transmits the detailed information to a user who has delivered detailed information regarding the same advertisement medium in the past after a certain period of time has passed since the delivery in the past. Advertising distribution system. The advertisement distribution system according to any one of claims 1 to 7,
A map information storage unit that stores map information around the area including the position where the advertisement medium is installed;
In order to guide the user to the browsable area, a guidance target person detecting unit that detects the user in an area around the browsable area,
Further comprising
The distribution processing unit distributes map information including a position where the user is present and a position where the advertisement medium is installed to the user when the guidance target person detecting unit detects that the user is in the area. An advertisement distribution system characterized by:

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