Abstract:
A mail piece verification system for processing mail pieces having associated therewith respective mail piece data. The system includes a plurality of postage metering systems for preparing mail pieces, a plurality of mail processing centers for receiving mail pieces and obtaining the respective mail piece data and a data center means in operative communication with the plurality of postage metering systems and the plurality of mail processing centers, the data center means including a plurality of account files corresponding to the plurality of postage metering systems. The data center means stores reset data in each of the plurality of account files representative of reset activity associated with the plurality of postage metering systems, respectively, receives respective mail piece data corresponding to the mail pieces from the plurality of mail processing centers, uses the respective mail piece data, storing empirical data in each of the plurality of account files representative of mailing activity associated with the plurality of postage metering systems, respectively, and conducts a forensic accounting analysis of the empirical data and the reset data associated with a selected postage metering system.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS  
       [0001]    This application is a continuation-in-part application of the following co-pending patent applications, the disclosures of which are specifically incorporated herein by reference: U.S. patent application Ser. No. 09/649,470, entitiled SYSTEM AND METHOD FOR VERIFYING DIGITAL POSTAL MARKS (E-998) filed on Aug. 28, 2000; and U.S. patent application Ser. No. 09/748,889, entitiled MAIL PIECE VERIFICATION SYSTEM (F-212) filed on Dec. 27, 2000. 
     
    
     
       FIELD OF THE INVENTION  
         [0002]    This invention relates to mail piece verification systems. More particularly, this invention is directed to a mail piece verification system conducting successive verification activities on a mail piece along different stages of a mail processing system.  
         BACKGROUND OF THE INVENTION  
         [0003]    Generally, postage metering systems are well known in the art. Typically, the traditional mechanical and electronic postage meters have employed physical security and specialized inks to prevent fraud. The registers that maintain an accounting of postal funds have been located within a secure housing along with a dedicated printer. As a further measure, the dedicated printers have used fluorescent ink to provide an extra aid in the detection of an authentic postage meter indicium.  
           [0004]    More recently, postal authorities have promulgated regulations that allow postage meter manufacturers to utilized digital printing technology (laser, ink jet, thermal transfer, etc.), either embedded as part of a mail handling system or as a general purpose office printer. As an example, the United States Postal Service (USPS) has enabled the decoupling of the postage meter and the printer and allowed the use of digital printers by establishing an Information-Based Indicia Program (IBIP). The IBIP is a distributed trusted system established by the USPS to retrofit and augment existing postage meters using new technology known as information-based indicia. The IBIP relies on digital signature techniques to produce for each mail piece an indicium whose origin cannot be repudiated. Thus, in contrast to traditional postage metering systems employing mechanical printing technology and physical security, the IBIP supports new methods of securely applying postage to mail pieces. Generally, the IBIP requires printing a high-density two-dimensional (2D) bar code on a mail piece. The 2D barcode encodes various information associated with the mail piece and is subsequently signed with a digital signature.  
           [0005]    The USPS has published detailed specifications for the IBIP. Generally, the IBIP is directed to two types of postage metering systems. The first type is referred to as a closed system and is defined in the INFORMATION BASED INDICIA PROGRAM—PERFORMANCE CRITERIA FOR INFORMATION-BASED INDICIA AND SECURITY ARCHITECTURE FOR CLOSED IBI POSTAGE METERINGS SYSTEMS, dated Jan. 12, 1999, (“IBIP Closed System Specification”). The second type is referred to as an open system and is defined in the INFORMATION BASED INDICIA PROGRAM—PERFORMANCE CRITERIA FOR INFORMATION-BASED INDICIA AND SECURITY ARCHITECTURE FOR OPEN IBI POSTAGE EVIDENCING SYSTEMS, dated Feb. 23, 2000, (“IBIP Open System Specification”). Together, the IBIP Closed System Specification and the IBIP Open System Specification define the requirements for next generation postage metering systems.  
           [0006]    Although the transition to digital printing provides many advantages, the postal authorities recognize that digital printing spawns potential new forms of fraud. As an example, an individual seeking to commit a fraud upon the postal authority need only utilize their computer, image scanner and printer to generate multiple copies of a single postal indicium. Thus, a valid indicium may be replicated perfectly. This technique is referred to as fraud by duplication.  
           [0007]    As a result, measures have been developed to detect such attempts to defraud the postal authorities. Typically, these measures involve verifying the authenticity of the postal indicium on a mail piece as the mail piece is being processed by the postal authority. This verification activity seeks to ensure that the postage amount shown in the postal indicium has been properly accounted for. For instance, the postal authority may validate the digital signature discussed above to determine the authenticity of the postal indicium. However, this will not necessarily expose a second mail piece with a duplicated postal indicium representing an exact copy of a valid indicium. Thus, detection of these types of duplicates, and other issues, present problems for the postal authorities.  
           [0008]    Another problem faced by the postal authorities is the intensive data processing required of a distributed mail processing system employing a plurality of remotely located processing centers. Typically, the processing center must scan each postal indicium to obtain its data, conduct database lookups, perform cryptographic calculations and determine whether or not the postal indicium is valid. If a mail piece cannot be validated, it is diverted to an out sort bin for further investigation and/or return to the sender. Complicating this situation is the fact that such verification processing is conducted by a single mail piece processing system. This necessitates that the verification processing is completed during the interval between mail piece scanning and the diversion location to the out sort bin. Given the rate at which the processing machines operate (up to 12 mail pieces per second), there is very little time to perform verification checks.  
           [0009]    Still further complications exist. If the cryptographic computations are to be performed locally (on individual processing machines), then large amounts of data must be distributed to all of the processing machines (e.g. cryptographic keys for each postage meter, data to enable detection of duplicate indicia) and kept updated to reflect changes in the meter population. On the other hand, if the computations are performed remotely, then the postal indicium data for each mail piece must be transmitted in real time to a central location, validated and the results returned to the processing machine before the mail piece reaches the diversion point. Both of these arrangements require significant real time processing and rapid database access.  
           [0010]    Yet another problem is the risk that the digital signatures and cryptography underlying the security of the postal system could be compromised. This could occur because of a successful attack or the release/use of information necessary to generate valid postal indicia by someone (a postal authority employee) having access to the security system. Once compromised in this manner, someone could print “valid” postal indicia that would pass verification by the postal authority. Thus, the postal authority would suffer losses from a fraudulent actor submitting postal indicia into the postal system that to all appearances would be beyond reproach.  
           [0011]    Therefore, there is a need for a mail piece verification system that provides operational advantages over those described above. Furthermore, there is a need for a mail piece verification system that includes a forensic accounting capability for improving upon the detection of apparently valid postal indicia.  
         SUMMARY OF THE INVENTION  
         [0012]    Accordingly, it is an object of the present invention to provide a mail piece verification system that addresses the drawbacks and disadvantage of the prior art systems.  
           [0013]    In accomplishing these and other objects there is provided a mail piece verification system for processing mail pieces having associated therewith respective mail piece data. The system includes a plurality of postage metering systems for preparing mail pieces, a plurality of mail processing centers for receiving mail pieces and obtaining the respective mail piece data and a data center in operative communication with the plurality of postage metering systems and the plurality of mail processing centers, the data center including a plurality of account files corresponding to the plurality of postage metering systems. The data center stores reset data in each of the plurality of account files representative of reset activity associated with the plurality of postage metering systems, respectively, receives respective mail piece data corresponding to the mail pieces from the plurality of mail processing centers, uses the respective mail piece data, storing empirical data in each of the plurality of account files representative of mailing activity associated with the plurality of postage metering systems, respectively, and conducts a forensic accounting analysis of the empirical data and the reset data associated with a selected postage metering system.  
           [0014]    Additionally, there are provided a method of operating the mail piece verification system, a method of operating a data center for processing mail piece data and a data structure, respectively, that are generally analogous to the summary provided above.  
           [0015]    Therefore, it should now be apparent that the invention substantially achieves all the above objects and advantages. Additional objects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Moreover, the objects and advantages of the invention may be realized and obtained by means of the instrumentalities and combinations particularly pointed out in the appended claims. 
       
    
    
     BRIEF DESCRIPTION OF THE DRAWINGS  
       [0016]    The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate presently preferred embodiments of the invention, and together with the general description given above and the detailed description of the preferred embodiments given below, serve to explain the principles of the invention. As shown throughout the drawings, like reference numerals designate like or corresponding parts.  
         [0017]    [0017]FIG. 1 is a schematic representation of a mail piece verification system in accordance with the present invention.  
         [0018]    [0018]FIG. 2 is an example of a postal indicium printed by a postage metering system that is processed by the mail piece verification system in accordance with the present invention.  
         [0019]    [0019]FIG. 3 is an example of a prior art mail piece that may be verified by the verification system in accordance with the present invention.  
         [0020]    [0020]FIG. 4 is a flow chart depicting the operation of the mail piece verification system in accordance with the present invention.  
         [0021]    [0021]FIG. 5 is a flow chart depicting an account reconciliation routine conducted by the mail piece verification system in accordance with the present invention. 
     
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS  
       [0022]    Referring to FIG. 1, a schematic representation a mail piece verification system  100  for processing a mail piece  20  (envelope, post card, package, label, e-mail, or the like), produced by a postage metering system  25  and having a postal indicium  30  printed thereon (or attached to, embedded in or otherwise associated with electronic forms of the mail piece  20 ), in a path of travel as indicated by the solid arrows is shown. The mail piece verification system  100  includes a deposit location  110 , an incoming mail processing center  120  having an incoming out sort bin  122 , a central postal data center  130 , a transportation system  140 , an outgoing mail processing center  150  having an outgoing out sort bin  152  and a delivery location  160 . The central postal data center  130  includes an account database  132  and is in operative communication with the incoming mail processing center  120  and the outgoing mail processing center  150  over any suitable conventional communication network, such as: telephone lines, a local area network, a wide area network, the Internet or the like. The account database  132  includes a plurality of customer account files  134 , described in greater detail below. Generally, as shown in FIG. 1, the solid lines with arrows are intended to represent the flow of the mail piece  20  while the dashed lines with arrows are intended to represent data flow, as described in greater detail below.  
         [0023]    For the sake of clarity, the mail piece verification system  100  has been shown with respect to a particular mail piece  20  and a single postage metering system  25 . Those skilled in the art will recognize that the mail piece verification system  100  may employ a plurality of deposit locations  110  that receive mail pieces  20  from a plurality of postage metering systems  25  and direct them to a plurality of incoming mail processing centers  120 . From these centers  120 , the mail pieces  20  are transported over a plurality of transportation systems  140  to a plurality of outgoing mail processing centers  150  so that the mail pieces may be delivered to a plurality of delivery locations  160 , accordingly. Thus, the mail piece verification system  100  represents a network of systems that connect the deposit locations  110  to the delivery locations  160 . Each mail piece  20  is routed through the mail piece verification system  100  (network) according to numerous factors, such as: the class of service selected and the physical locations of the deposit  110  and the delivery location  160 .  
         [0024]    The deposit location  110  may be any acceptance point (post office window, mail box, computer server, etc.) that the postal authority has designated for receiving mail pieces  20  from the public. The incoming mail processing center  120  may or may not be co-located with the deposit location  110 . In either case, the mail pieces  20  are directed by postal authority to the incoming mail processing center  120  which may employ one or more mail processing machines, such as the Small Parcel and Bundle Sorter, the Advanced Facer Canceller System or the Flats Sorting Machine, all available from Lockheed Martin—Postal Automation Systems. These mail processing machines typically perform preliminary tasks on the mail pieces  20 , such as: culling, positioning (facing the mail piece), POSTNET bar code printing, sorting and the like. Any mail pieces  20  that are deemed unacceptable are diverted to the out sort bin  122 . Once the preliminary mail processing tasks are completed, the mail piece  20  travels over the transportation system  140  to the outgoing mail processing center  150 . The transportation system  140  may employ any suitable combination of physical transport, such as: truck, plane, boat, car, computer network, or the like. The outgoing mail processing center  150  is very similar to the incoming mail processing center  120  and may employ one or more of the same types of mail processing machines described above. These mail processing machines typically perform secondary tasks on the mail pieces  20 , such as: culling, positioning, POSTNET bar code reading, sorting and the like. Any mail pieces  20  that are deemed unacceptable are diverted to the out sort bin  152 . Once the secondary mail processing tasks are completed, the mail piece  20  is routed via a designated post office to the delivery location  160  (home address, business address, post office box, computer account, IP address or the like).  
         [0025]    Those skilled in the art will recognize that any combination of incoming mail processing centers  120 , transportation systems  140  and outgoing mail processing centers  150  may be employed to effect receipt of the mail piece  20  at the deposit location  110  and route the mail piece  20  to the delivery location  160 . For example, many intermediate processing centers may be employed and the transportation system  140  may be deployed in stages. Numerous factors, such as the class of service and the physical proximity of the deposit location  110  to the delivery location  160 , may influence the exact route that a particular mail piece  20  may take while it is in transit.  
         [0026]    Furthermore, those skilled in the art will appreciate that the incoming mail processing center  120  and the outgoing mail processing center  150  may be co-located. In fact, they may actually be the same mail processing center. In some ways what differentiates the incoming mail processing center  120  from the outgoing mail processing center  150  is the status of the mail piece  20 . If the mail piece  20  has just been received, then the mail processing center is operating as the incoming mail processing center  120 . On the other hand, if the mail piece  20  is well along its delivery route, then the mail processing center is operating as the outgoing mail processing center  150 . Thus, at any given location, the same mail processing center may be operating as both an incoming mail processing center  120  (for the mail pieces  20  that have just been deposited for delivery) and as an outgoing mail processing center  150  (for the mail pieces  20  that have already been processed and are nearing their delivery points).  
         [0027]    Still further, instead of being a singular facility, the postal data center  130  may be embodied as a plurality of regional postal data centers that are geographically dispersed and networked together using suitable communication techniques. This may allow for various advantages, such as: system redundancy (in case of failures), quicker response times and reduced communication expenses, while preserving the benefits of the communication path ways generally described above and in more detail below.  
         [0028]    Generally, the plurality of postage metering systems  25  are in communication with the central postal data center  130  over any conventional communication lines for the purpose of conducting remote inspections and meter resets (downloading of postal funds) as is known in the art. The postage metering systems  25  may be of any conventional type, such as those commercially available (ClickStamp® Online, PostPerfect®, Paragon® II, DM200™, etc.) from Pitney Bowes Inc. of Stamford, Conn. A historical account of the disbursement of these postal funds is maintained in the account database  132 . Each of the plurality of customer account files  134  includes an account identifier (numeric, alpha-numeric, etc.)  134   a , a list of postage meter serial numbers (one or more)  134   b  associated with the account identifier  134   a , meter reset activity data  134   c  and empirical mailing activity data  134   d  (described in greater detail below). The postage meter serial numbers  134   b  correspond to the meter serial number  32  that in printed in the postal indicium  30 . Preferably, the reset activity data  134   c  includes a reset date and a reset amount that is stored for each meter reset transaction associated with each particular postage metering system  25 . Thus, a historical log of an amount of postage that has been purchased by each postage metering system  25  is maintained. Those skilled in the art will recognize that the account identifier  134   a  and the postage meter serial numbers  134   b  may be collapsed into a single identifier that serves to identify the customer.  
         [0029]    Referring to FIG. 2 in view of FIG. 1, a more detailed view of the postal indicium  30  printed by the postage metering system  25  is shown. Since the postal indicium  30  does not constitute a part of the present invention, the following description is being provided with respect to a particular type of postal indicium  30  by way of background. Generally, the postal indicium  30  includes both fixed data that does not change from indicium to indicium and variable data that may change. The fixed and variable data may change depending upon postal authority requirements and the needs of the postage system manufacturer, but generally can be summarized as follows. The fixed data includes a graphic design  31  (an eagle with stars and US POSTAGE), a meter serial number  32  uniquely identifying the postage meter (not shown) that produced the postal indicium  30 , a licensing post office ID (Zip Code)  33  and an optional facer identification mark (FIM)  34  used during post office processing. The variable data includes a date  35  indicating when the postage was dispensed, a postal value  36  indicating an amount of postage, an indication of a service class (first class, bulk rate, priority, overnight, certified, etc.) that has been selected for the mail piece  20 , a bar code  37  containing both elements of both fixed and variable data and, in the most preferred embodiment, authentication information  38 . The bar code  37  may be of any conventional format and is provided for the purpose of improving machine readability and increasing automated processing of the mail piece  20 . Generally, the authentication information  38  is an encrypted message, such as a digital signature, digital token or other data, derived from the information contained with the postal indicium  30 . The authentication information  38  may be in any format, such as: alphanumeric string, bar code or the like. Most preferably, the authentication information  38  is incorporated into the bar code  37 . Using the authentication information  38  and other data contained within the postal indicium  30 , the postal authority can verify the authenticity of the postal indicium  30  using conventional techniques. Thus, the postal indicium  30  may also be classified as containing authentication information  38  and non-authentication information  31 - 37  and  39 .  
         [0030]    As mentioned above, the postal indicium  30  need only be associated with the particular mail piece  20 . Therefore, when the mail piece  20  takes electronic form, the postal indicium  30  may be reconfigured accordingly.  
         [0031]    Referring to FIG. 3, in view of FIGS. 1 and 2, an example of a prior art mail piece  20  that may be processed by the verification system  100  is shown. The mail piece  20  includes the postal indicium  30  (as described above) produced by a postage metering system  25 , a sender address  40  (optional) and a recipient address  50 . The recipient address  50  provides information to the postal authority corresponding to the delivery location  160 . The typical recipient address  50  includes a recipient name  52  (personal, business or generic (occupant)), recipient delivery information  54  (street address, post office box number, etc.), a city name  56 , a state name  57  and a ZIP code  58 .  
         [0032]    With the structure of the present invention described as above, the operational characteristics will now be described with respect to receipt and delivery of the mail piece  20 . For the sake of clarity, it is assumed that the mail piece  20  is processed by only one incoming mail processing center  120  and only one outgoing mail processing center  150 . Referring primarily to FIG. 4 while referencing the structure of FIGS. 1, 2 and  3 , a flow chart  400  of the general operation of the mail piece verification system  100  in accordance with the present invention is shown. A further detailed discussion of a forensic account reconciliation routine is provided below.  
         [0033]    After receiving the mail piece  20  at the deposit location  110 , at  402 , the mail piece  20  is scanned at the incoming mail processing center  120  to obtain mail piece data. The mail piece data may include the postal indicium  30 , the recipient address  50 , the sender address  40  or any combination or subset of the above. Next, at  404 , a determination may optionally be made whether or not the mail piece  20  meets preliminary conditions. In the most preferred embodiment, the preliminary conditions do not involve cryptographic calculations or access to complicated databases. The preliminary conditions may include: recognition of a valid meter serial number  32 , a posting date  35  within an acceptable range of the current date, suitable readability of the mail piece  20  in terms of accuracy and completeness and recognition of a valid recipient address  50 . If at  404  the answer is no, then at  406  the mail piece  20  is out sorted to out sort bin  122  for further investigation, human reading, return to the sender or some other suitable action. On the other hand, if the answer at  404  is yes, then at  408  a global identification number (preferably an alphanumeric string) (not shown) is assigned to the mail piece  20  that uniquely identifies the mail piece  20  to the postal authority. The global identification number may preferably be chosen to reflect other information, such as: the particular incoming mail processing center  110  that received the mail piece  20 . Optionally, the global identification number may be printed on the mail piece  20  in bar code or some other conventional format. Generally, the global identification numbers are allocated to the incoming mail processing center  120  by the central postal data center  130 . In this way, the incoming mail processing center  120  may assign the numbers one at a time as the mail pieces  20  are received. Next, at  410 , the mail piece data and the global identification number are uploaded from the incoming mail processing center  120  to the central postal data center  130 . Next, at  412 , the mail piece  20  is advanced downstream in the path of travel along the delivery route by the transportation system  140 . Next, at  414 , the central postal data center  130  conducts an analysis to see if the mail piece  20  meets secondary conditions. In the most preferred embodiment, the secondary conditions involve cryptographic calculations to determine the validity of the postal indicium  30 . Those skilled in the art will recognize that the mail piece data may be transmitted to a central postal data center  130  for verification either immediately or as a batch process at some later time. Since the incoming mail processing center  120  does not perform cryptographic verification checks, there is no need to distribute sensitive information (e.g., cryptographic keys, “license plates,” duplicate data and the like) to the incoming mail processing center  120 . In addition, the computational requirements for the incoming mail processing center  120  are significantly reduced (no need to rapidly perform database lookups or cryptographic operations).  
         [0034]    Next, at  416 , the central postal data center  130  downloads instructions, as necessary, to the outgoing mail processing center  150  for use in processing the mail piece  20 . In the most preferred embodiment, the processing instructions are associated with the global identification number of the mail piece  20 . For example, the instruction may indicate that the mail piece  20  should be diverted to the out sort bin  152  for follow up by a postal authority investigator. As another example, the instructions may indicate that the mail piece  20  should be processed in a normal fashion. In the alternative, instructions may only be supplied for “special” (other than normal) processing. In this situation, the absence of a special instruction (divert instruction) may indicate that the outgoing mail processing center  150  should process the mail piece  20  in a normal fashion. Next, at  418 , the outgoing mail processing center  150  scans the mail piece  20  to obtain the global identification number. As discussed above, it may have even been printed on the mail piece  20  by the incoming mail processing center  120 . Next, at  420 , the outgoing mail processing center  150  retrieves any processing instructions associated with the global identification number through simple database access. Next, at  422 , the outgoing mail processing center  150  processes the mail piece  20  in accordance with the processing instructions, as described above.  
         [0035]    With the basic operation of the mail piece verification system described as above, a forensic account reconciliation routine that may be additionally performed by the data center  130  will now be described. Referring primarily to FIG. 5 while referencing the structure of FIGS. 1, 2 and  3 , a flow chart  500  of the account reconciliation routine of the mail piece verification system  100  in accordance with the present invention is shown. At  502 , the central postal data center  130  conducts a summation of all the mail piece data associated with each individual mail piece  20  that has been processed by the plurality of incoming mail processing centers  120 . Preferably, this summation analysis occurs at predetermined occasions (time based and/or event based) and gathers the mail piece data by the account identifier  134   a  and/or by postage meter serial number  134   b . Thus, the summation analysis yields data indicative of the empirical activity associated with each account identifier  134   a  and/or postage meter serial number  134   b  for a given time period. Accordingly, respective empirical activity data  134   d  is stored in each of the plurality of customer account files  134 . The empirical activity data  134   d  may include piece counts for each given mail class, postage amounts or any other mailing activity related data sufficient to derive an exact or reliable estimate of an amount of postage consumed. Thus, a historical account of observed mailing activity is maintained by the empirical activity data  134   d . Next, at  504 , the central postal data center  130  reconciles the reset activity data  134   c  with the empirical activity data  134   d  for consistency. This may involve any degree of forensic account analysis to determine the fidelity of the empirical activity data  134   d  in view of the reset activity data  134   c . An example will now be provided. The reset activity data  134   c  may be used to ascertain an amount of postage that has been purchased by a respective postage metering system  25  over a given time period. Likewise, the empirical activity data  134   d  may be used to ascertain an amount of postage that has been consumed in relation to the given time period. Thus, by comparing the purchased postage amount with the consumed postage amount, the propriety of the customers mailing activities may be established. Those skilled in the art will recognize that because there is generally a time lag between when postage is purchased and when it is consumed, care must be taken when defining what postage purchases should be compared against what mailing activity.  
         [0036]    Next, at  506 , a determination is made whether or not the reset activity data  134   c  is consistent with the empirical activity data  134   d . For the sake of clarity, it should be understood that this determination could be made for each one of or any subset of the plurality of customer account files  134 . Thus, the plurality of customer account files  134  selected for analysis may be those where suspicions have arisen or based on a period sampling for audit purposes. If at  506  the answer is yes, then at  508  the routine  500  continues normally and no responsive (corrective and/or investigative) action is taken with respect to the customer account file  134 /meter serial number  134   b  for which the forensic analysis was conducted. On the other hand, if the answer at  506  is no, then at  510  responsive action is taken. Many possibilities for responsive action exist. As an example, an inspection of the metering system  25  may be conducted. This inspection may involve dispatching an authorized representative to perform a site inspection at the customer&#39;s location and/or a remote diagnostic inspection during a subsequent communication session between the metering system  25  and the data center  130 . These inspections would seek to determine if the metering system  25  has been tampered with either physically or electronically. As another example, delivery of mail pieces  20  from the suspect customer account file  134 /meter serial number  134   b  may be withheld. As yet another example, new graphic data  31  may be down loaded to the metering system  25  during a subsequent communication session with the data center  130 . The new graphic data  31  may include a tell (hidden clue) that facilitates discerning whether or not the fraudulent indicium  30  has been created by the customer or a third party. As yet still another example, a new meter serial number  134   b  may be issued to replace the existing meter serial number  134   b  from the suspect customer account file  134 /meter serial number  134   b . Preferably, this occurs after the postage metering system  25  has passed inspection. Then, delivery of mail pieces  20  containing the existing meter serial number  134   b  may be withheld while delivery of mail pieces  20  containing the new meter serial number  134   b  may continue normally. In this manner, any fraudulent use of the existing meter serial number  134   b  by third parties will be met with a suitable counter measure from the postal authority while the rightful use of the new meter serial number  134   b  by the customer continues uninterrupted. As yet still another example, the data center  130  may limit a recharge amount of postage that may be downloaded to the postage metering system  25  during a reset operation. In this way, a closed system type of postage metering system  25  would likely have to contact the data center  130  more frequently and thus allow more frequent remote inspections of the postage metering system  25 . Advantages for open system type postage metering systems  25  may also apply. Those skilled in the art will recognize that the examples described above are mutually exclusive and may be implemented in any combination.  
         [0037]    The data center  130  may execute this responsive action by providing suitable instructions to the postage metering system  25  and the mail processing centers  120  and  150 .  
         [0038]    Those skilled in the art will now recognize that the present invention substantially addresses many of the drawbacks and deficiencies associated with conventional mail processing in addition to those discussed above. Since all cryptographic verification operations (indicium verification, duplicate detection) are performed at the central postal data center  130 , the overall security and integrity of the system  100  are improved but access to the cryptographic information is limited. Since the cryptographic verification operations are generally performed while the mail piece  20  is in transit from the incoming mail processing center  120  to the outgoing mail processing center  150 , this significantly increases the time allotted to perform verification. This extra time enables more detailed checks to be performed. Furthermore, by migrating cryptographic verification operations to the central postal data center  130 , the verification procedures may be more easily modified on an as needed basis (the current system would require major distributed system updates to be performed in order to change verification procedures).  
         [0039]    When the mail piece  20  is scanned at the incoming mail processing center  120 , the delivery route through the system  100  to the delivery location  160  is often determined using the ZIP code  33  in view of existing transportation hubs and the proximity of the delivery location  160  to available outgoing mail processing centers  150 . Therefore, even further efficiencies may be available. For example, the need to broadcast the down load of the processing instruction to the entire population of outgoing mail processing centers  150  may be eliminated. Instead, the processing instructions may be directly sent to a particular one of the outgoing mail processing centers  150  corresponding to the determined delivery route of the mail piece. In this manner, the amount of data that is download and the total communications between the central postal data center  130  and the population of outgoing mail processing centers  150  is reduced.  
         [0040]    If 100% inspection of the mail stream is conducted by the plurality of incoming mail processing centers  120 , then the verification system  100  becomes a closed loop system due to the account reconciliation routine  500 . Furthermore, because of the summation activity performed by the data center  130  against the mail piece data that has been collected across the plurality of incoming mail processing centers  120 , it does not matter if fraudulent mail pieces  20  are being deposited with different incoming mail centers  120  in an attempt to disperse (and thus conceal) the fraudulent activity. Thus, dispersed fraudulent activity that may otherwise fall within an acceptable “noise” parameter established for a micro level of operation (individual incoming mail centers  120 ) may be detected at a macro level of operation (the data center  130 ).  
         [0041]    Furthermore, by having a closed loop system, detection of a successful attack on the system  100  or the unauthorized release/use of postal authority and/or meter manufacturer information necessary to generate postal indicia  30  that would pass cryptographic scrutiny would be detected. Thus, the forensic analysis and counter measures associated with the response actions described above would assist in detecting and controlling this type of fraud.  
         [0042]    If limited inspection (less than 100%) of the mail stream is being conducted by the plurality of incoming mail processing centers  120 , then the verification system  100  may operate in a more selective manner. For example, the empirical activity data  134   d  that is actually observed may be extrapolated in view of the sampling rates employed by the incoming mail processing centers  120  to develop estimated actual activity data. This estimated actual activity data may then be compared with the reset activity  134   c . If the estimated activity data is exceeds the reset activity  134   c  by more than a previously defined threshold amount (i.e. 20%), then the sampling rate for mail pieces  20  associated with the respective meter serial number  134   b  may be increased. That is, an instruction may be provided by the data center  130  to the incoming mail processing centers  120  to sample data during the preliminary mail processing tasks from mail pieces  20  containing the respective meter serial number  134   b  at a greater frequency (even 100%) than that employed for the mail stream at large. Thus, the data center  130  may develop more precise empirical activity data  134   d.    
         [0043]    As a further benefit, the system  100  of the present invention also increases the chance that a pair of duplicate mail pieces  20  can be captured for investigation and/or prosecution. In the current system, a duplicate mail piece  20  can only be detected after the “original” has been processed. Therefore, the current system is not set up to out sort both an original mail piece  20  and a fraudulent copy. Without both mail pieces  20 , prosecution of the offender is likely to be much harder. Since the present invention performs duplicate checking while the mail pieces  20  are in transit and provides the opportunity for downstream diversion, both the original and the duplicate may be captured. In other words, if a duplicate enters the mail stream prior to delivery of the original mail piece  20 , then both mail pieces  20  can be out sorted for investigation.  
         [0044]    As yet still another benefit, the service class  39  information may be used to determine a priority for scheduling: (i) the uploading of the mail piece data; (ii) the performance of the secondary checks; and/or (iii) the downloading of the processing instructions. As examples, in this manner, the different data handling needs of a mail piece  20  that has been sent by overnight delivery may be expedited, those of a 1 st  class mail piece  20  may be somewhat more moderately attended to while those of a bulk rate mail piece  20  may be addressed in an even more deliberate manner. Thus, the postal authority may more efficiently process the mail piece data based on the service class  39  in view of the amount of delivery time available, the anticipated likelihood of fraud (large volume mailings, such as bulk rate, often are targeted by fraudulent actors than lower volume mailings, such as priority mail) and other factors. As a result, the incoming mail processing center  120  may communicate more frequently with the central postal data center  130  for the purpose of uploading mail piece data associated with short delivery cycles while those of mail pieces  20  having longer delivery cycles may occur during “off peak” periods. Thus, the service class  39  may be used to set a priority for the upload of mail piece data and in analogous fashion the subsequent download of processing instructions.  
         [0045]    Those skilled in the art will recognize that various modifications can be made without departing from the spirit of the present invention. For example, a series of central postal data centers  130  in communication with each other could be set up to share and distribute verification tasks. As another example, letter carriers or mail boxes could perform scanning of the postal indicium  30  at time of deposit. This would accelerate the input of the mail piece data into the system  100 . As yet another example, a list of valid mail pieces  20  could be transmitted to the outgoing mail processing centers to ensure that fraudulent mail pieces were not introduced into the mail stream during transport due to corrupt postal authority employees or otherwise. Thus, the central postal data center  130  could download a list of valid global identification numbers. In the absence of the scanned global identification number appearing on such a list, the mail piece  20  could be diverted. As yet still another example, those skilled in the art will recognize that many of the steps and activities described above may be performed in differing orders or concurrently. As still yet another example, if the mail piece  20  is an electronic file, then the postal indicium  30  may be replaced with any other suitable indication of payment and instead of scanning the mail piece  20 , the mail piece data may already be associated with the mail piece  20  such as by attachment as a header file. As still yet another example, the verification system  100  has been described with respect to an unrestricted access system where anyone may utilize the mail piece delivery network. However, those skilled in the art will recognize that the verification system  100  would work equally as well in a restricted access system (such as: subscription based delivery services and the like) where delivery services would only be provided for selected individuals and/or organizations.  
         [0046]    As still yet another example, those skilled in the art will recognize that various modifications to the preferred embodiments described above may be made so that the inventive concepts are applied to permit mailing activity. In permit mailing activity, postage metering systems  25  are generally not used. Instead, the postal authority only excepts permit mail under controlled conditions. Typically, for permit mail, the postal authority issues a permit number to the customer and the customer brings the permit mail pieces to the postal authority along with a manifest describing the size or other characteristics of the mail run. In response, the postal authority charges or debits the customer&#39;s account accordingly. Thus, this customer account activity is directly analogous to the reset activity data  134   c . As a result, the term reset activity data  134   c  should be construed as including any form of postal funds account record keeping that may be employed.  
         [0047]    As yet still another example, although the data center  130  has been described generally as under the control of a single entity at a single location, this need not necessarily be the case. The postage meter manufacture may be authorized by the postal authority to conduct be in contact with the postage metering systems  25  and conduct reset operations. However, typically the postal authority is more directly involved with the processing of mail pieces  20  by the mail processing centers  130  and  150 . Thus, in this scenario, an exchange of data between to the data centers  130  operated at different locations or by different entities may be required in order to practice the present invention as described with respect to the preferred embodiments.  
         [0048]    Furthermore, although the above description has been provided with respect to pre-payment (debit from existing funds) type postage metering systems  25  (as employed in the United States), the concepts of the present invention apply equally well to post-payment (credit) type postage metering systems  25  (as employed in France). Thus, although the exact reset operations conducted for pre-payment and post-payment postage metering systems  25  may be different, the important similarities are authorization of continued use of the postage metering system  25  and/or inspection of the accounting registers contained with the postage metering system  25 . Thus, reset activity data  134   c  should be construed as being directed to those types of activities associated with either type of postage metering system  25 .  
         [0049]    Therefore, the inventive concept in its broader aspects is not limited to the specific details of the preferred embodiments but is defined by the appended claims and their equivalents.