Computer program for a currency tracking system

Abstract

A set of instructions for causing a computer system to monitor transactions involving security documents. Each security document has disposed thereon or therein coded data including a number of coded data portions, each coded data portion being indicative of at least an identity of the security document. The set of instructions causes the computer system to receive indicating data from a sensing device, the sensing device being responsive to sensing of coded data to generate indicating data at least partially indicative of the identity of the security document and the transaction. The computer system updates, transaction data stored in a data store, using the identity, the transaction data being indicative of the identity of the security document and the transaction.

1 . A set of instructions for causing a computer system to monitor transactions involving security documents, each security document having disposed thereon or therein coded data including a number of coded data portions, each coded data portion being indicative of at least an identity of the security document, the set of instructions, when executed by the computer system, causing the computer system to:
 receive indicating data from a sensing device, the sensing device being responsive to sensing of coded data to generate indicating data at least partially indicative of:
 the identity of the security document; and, 
 the transaction; 
   update, using the received indicating data, transaction data stored in a data store, the transaction data being indicative of:
 the identity of the security document; and, 
 the transaction. 
   
     
     
         2 . A set of instructions according to  claim 1 , wherein the set of instructions causes the computer system to compare the transaction data to one or more predetermined patterns to thereby determine the presence or absence of a cash flow anomaly. 
     
     
         3 . A set of instructions according to  claim 2 , wherein the set of instructions causes comparison data to be output by the computer system, the comparison data being indicative of the results of the comparison. 
     
     
         4 . A set of instructions according to  claim 2 , wherein each predetermined pattern is at least partially related to at least one of:
 a predetermined transaction threshold;   a predetermined number of transactions performed in a predetermined timeframe;   an identity of a particular party;   a sequence of transactions related to one or more security documents;   a cash flow demand forecast; and,   a geographic trend.   
     
     
         5 . A set of instructions according to  claim 3 , where the computer system includes a display device, wherein the set of instructions, when executed by the computer system, cause the computer system to display, using the display device, at least one of:
 the comparison data; and,   the transaction data.   
     
     
         6 . A set of instructions according to  claim 1 , wherein the transaction data includes a transaction status indicative of whether the security document is at least one of:
 a copied security document;   a stolen security document; and,   a counterfeit security document.   
     
     
         7 . A set of instructions according to  claim 1 , wherein each coded data portion is further indicative of at least part of a signature, the signature being a digital signature of at least part of the identity, and wherein the set of instructions, when executed by the computer system, cause the computer system to:
 determine, from the indicating data, a determined identity and at least one determined signature part; and,   authenticate the security document using the determined identity and the at least one determined signature part.   
     
     
         8 . A set of instructions according to  claim 7 , wherein the signature is a digital signature of at least part of the identity and at least part of predetermined padding, the padding being at least one of:
 a predetermined number; and,   a random number.   
     
     
         9 . A set of instructions according to  claim 7 , wherein the entire signature is encoded within a plurality of coded data portions and wherein the system includes the sensing device configured to sense a number of coded data portions to thereby determine the entire signature. 
     
     
         10 . A set of instructions according to  claim 7 , wherein the coded data includes a plurality of layouts, each layout defining the position of a plurality of first symbols encoding the identity, and a plurality of second symbols defining at least part of the signature. 
     
     
         11 . A set of instructions according to  claim 1 , wherein the coded data is substantially invisible to an unaided human. 
     
     
         12 . A set of instructions according to  claim 1 , wherein the coded data is printed on the surface using at least one of:
 an invisible ink; and,   an infrared-absorptive ink.   
     
     
         13 . A set of instructions according to  claim 1 , wherein the coded data is provided substantially coincident with visible human-readable information. 
     
     
         14 . A set of instructions according to  claim 1 , wherein at least some of the coded data portions encode at least one of:
 a location of the respective coded data portion;   a position of the respective coded data portion on the surface;   a size of the coded data portions;   a size of a signature;   an identity of a signature part; and,   units of indicated locations.   
     
     
         15 . A set of instructions according to  claim 1 , wherein the coded data includes at least one of:
 redundant data;   data allowing error correction;   Reed-Solomon data; and,   Cyclic Redundancy Check (CRC) data.   
     
     
         16 . A set of instructions according to  claim 7 , wherein the digital signature includes at least one of:
 a random number associated with the identity;   a keyed hash of at least the identity;   a keyed hash of at least the identity produced using a private key, and verifiable using a corresponding public key;   cipher-text produced by encrypting at least the identity;   cipher-text produced by encrypting at least the identity and a random number; and,   cipher-text produced using a private key, and verifiable using a corresponding public key.   
     
     
         17 . A set of instructions according to  claim 1 , wherein the security document is at least one of:
 a currency note;   a check;   a credit or debit card;   a redeemable ticket, voucher, or coupon;   a lottery ticket or instant win ticket; and,   an identity card or document, such as a driver's license or passport.   
     
     
         18 . A set of instructions according to  claim 1 , wherein the identity is indicative of at least one of:
 a currency note attribute including at least one of:
 currency; 
 issue country; 
 denomination; 
 note side; 
 printing works; and 
 serial number; 
   a check attribute including at least one of:
 currency; 
 issuing institution; 
 account number; 
 serial number; 
 expiry date; 
 check value; and 
 limit; 
   a card attribute including at least one of:
 card type; 
 issuing institution; 
 account number; 
 issue date; 
 expiry date; and 
 limit. 
   
     
     
         19 . A set of instructions according to  claim 1 , wherein the coded data is arranged in accordance with at least one layout having n-fold rotational symmetry, where n is at least two, the layout including n identical sub-layouts rotated 1/n revolutions apart about a centre of rotation, at least one sub-layout including rotation-indicating data that distinguishes that sub-layout from each other sub-layout. 
     
     
         20 . A set of instructions according to  claim 1 , wherein the coded data is arranged in accordance with at least one layout having n-fold rotational symmetry, where n is at least two, the layout encoding orientation-indicating data comprising a sequence of an integer multiple m of n symbols, where m is one or more, each encoded symbol being distributed at n locations about a centre of rotational symmetry of the layout such that decoding the symbols at each of the n orientations of the layout produces n representations of the orientation-indicating data, each representation comprising a different cyclic shift of the orientation-indicating data and being indicative of the degree of rotation of the layout.